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s3:smbd: fix max_buffer handling of initial notify requests
[Samba.git] / source3 / smbd / nttrans.c
blob8bb121a13515fe6c43a36cf9550485d642200e94
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 extern const struct generic_mapping file_generic_mapping;
37
38 static char *nttrans_realloc(char **ptr, size_t size)
39 {
40 if (ptr==NULL) {
41 smb_panic("nttrans_realloc() called with NULL ptr");
42 }
43
44 *ptr = (char *)SMB_REALLOC(*ptr, size);
45 if(*ptr == NULL) {
46 return NULL;
47 }
48 memset(*ptr,'\0',size);
49 return *ptr;
50 }
51
52 /****************************************************************************
53 Send the required number of replies back.
54 We assume all fields other than the data fields are
55 set correctly for the type of call.
56 HACK ! Always assumes smb_setup field is zero.
57 ****************************************************************************/
58
59 static void send_nt_replies(connection_struct *conn,
60 struct smb_request *req, NTSTATUS nt_error,
61 char *params, int paramsize,
62 char *pdata, int datasize)
63 {
64 int data_to_send = datasize;
65 int params_to_send = paramsize;
66 int useable_space;
67 char *pp = params;
68 char *pd = pdata;
69 int params_sent_thistime, data_sent_thistime, total_sent_thistime;
70 int alignment_offset = 1;
71 int data_alignment_offset = 0;
72 struct smbXsrv_connection *xconn = req->xconn;
73 int max_send = xconn->smb1.sessions.max_send;
74
75 /*
76 * If there genuinely are no parameters or data to send just send
77 * the empty packet.
78 */
79
80 if(params_to_send == 0 && data_to_send == 0) {
81 reply_outbuf(req, 18, 0);
82 if (NT_STATUS_V(nt_error)) {
83 error_packet_set((char *)req->outbuf,
84 0, 0, nt_error,
85 __LINE__,__FILE__);
86 }
87 show_msg((char *)req->outbuf);
88 if (!srv_send_smb(xconn,
89 (char *)req->outbuf,
90 true, req->seqnum+1,
91 IS_CONN_ENCRYPTED(conn),
92 &req->pcd)) {
93 exit_server_cleanly("send_nt_replies: srv_send_smb failed.");
94 }
95 TALLOC_FREE(req->outbuf);
96 return;
97 }
98
99 /*
100 * When sending params and data ensure that both are nicely aligned.
101 * Only do this alignment when there is also data to send - else
102 * can cause NT redirector problems.
103 */
104
105 if (((params_to_send % 4) != 0) && (data_to_send != 0)) {
106 data_alignment_offset = 4 - (params_to_send % 4);
107 }
108
109 /*
110 * Space is bufsize minus Netbios over TCP header minus SMB header.
111 * The alignment_offset is to align the param bytes on a four byte
112 * boundary (2 bytes for data len, one byte pad).
113 * NT needs this to work correctly.
114 */
115
116 useable_space = max_send - (smb_size
117 + 2 * 18 /* wct */
118 + alignment_offset
119 + data_alignment_offset);
120
121 if (useable_space < 0) {
122 char *msg = talloc_asprintf(
123 talloc_tos(),
124 "send_nt_replies failed sanity useable_space = %d!!!",
125 useable_space);
126 DEBUG(0, ("%s\n", msg));
127 exit_server_cleanly(msg);
128 }
129
130 while (params_to_send || data_to_send) {
131
132 /*
133 * Calculate whether we will totally or partially fill this packet.
134 */
135
136 total_sent_thistime = params_to_send + data_to_send;
137
138 /*
139 * We can never send more than useable_space.
140 */
141
142 total_sent_thistime = MIN(total_sent_thistime, useable_space);
143
144 reply_outbuf(req, 18,
145 total_sent_thistime + alignment_offset
146 + data_alignment_offset);
147
148 /*
149 * Set total params and data to be sent.
150 */
151
152 SIVAL(req->outbuf,smb_ntr_TotalParameterCount,paramsize);
153 SIVAL(req->outbuf,smb_ntr_TotalDataCount,datasize);
154
155 /*
156 * Calculate how many parameters and data we can fit into
157 * this packet. Parameters get precedence.
158 */
159
160 params_sent_thistime = MIN(params_to_send,useable_space);
161 data_sent_thistime = useable_space - params_sent_thistime;
162 data_sent_thistime = MIN(data_sent_thistime,data_to_send);
163
164 SIVAL(req->outbuf, smb_ntr_ParameterCount,
165 params_sent_thistime);
166
167 if(params_sent_thistime == 0) {
168 SIVAL(req->outbuf,smb_ntr_ParameterOffset,0);
169 SIVAL(req->outbuf,smb_ntr_ParameterDisplacement,0);
170 } else {
171 /*
172 * smb_ntr_ParameterOffset is the offset from the start of the SMB header to the
173 * parameter bytes, however the first 4 bytes of outbuf are
174 * the Netbios over TCP header. Thus use smb_base() to subtract
175 * them from the calculation.
176 */
177
178 SIVAL(req->outbuf,smb_ntr_ParameterOffset,
179 ((smb_buf(req->outbuf)+alignment_offset)
180 - smb_base(req->outbuf)));
181 /*
182 * Absolute displacement of param bytes sent in this packet.
183 */
184
185 SIVAL(req->outbuf, smb_ntr_ParameterDisplacement,
186 pp - params);
187 }
188
189 /*
190 * Deal with the data portion.
191 */
192
193 SIVAL(req->outbuf, smb_ntr_DataCount, data_sent_thistime);
194
195 if(data_sent_thistime == 0) {
196 SIVAL(req->outbuf,smb_ntr_DataOffset,0);
197 SIVAL(req->outbuf,smb_ntr_DataDisplacement, 0);
198 } else {
199 /*
200 * The offset of the data bytes is the offset of the
201 * parameter bytes plus the number of parameters being sent this time.
202 */
203
204 SIVAL(req->outbuf, smb_ntr_DataOffset,
205 ((smb_buf(req->outbuf)+alignment_offset) -
206 smb_base(req->outbuf))
207 + params_sent_thistime + data_alignment_offset);
208 SIVAL(req->outbuf,smb_ntr_DataDisplacement, pd - pdata);
209 }
210
211 /*
212 * Copy the param bytes into the packet.
213 */
214
215 if(params_sent_thistime) {
216 if (alignment_offset != 0) {
217 memset(smb_buf(req->outbuf), 0,
218 alignment_offset);
219 }
220 memcpy((smb_buf(req->outbuf)+alignment_offset), pp,
221 params_sent_thistime);
222 }
223
224 /*
225 * Copy in the data bytes
226 */
227
228 if(data_sent_thistime) {
229 if (data_alignment_offset != 0) {
230 memset((smb_buf(req->outbuf)+alignment_offset+
231 params_sent_thistime), 0,
232 data_alignment_offset);
233 }
234 memcpy(smb_buf(req->outbuf)+alignment_offset
235 +params_sent_thistime+data_alignment_offset,
236 pd,data_sent_thistime);
237 }
238
239 DEBUG(9,("nt_rep: params_sent_thistime = %d, data_sent_thistime = %d, useable_space = %d\n",
240 params_sent_thistime, data_sent_thistime, useable_space));
241 DEBUG(9,("nt_rep: params_to_send = %d, data_to_send = %d, paramsize = %d, datasize = %d\n",
242 params_to_send, data_to_send, paramsize, datasize));
243
244 if (NT_STATUS_V(nt_error)) {
245 error_packet_set((char *)req->outbuf,
246 0, 0, nt_error,
247 __LINE__,__FILE__);
248 }
249
250 /* Send the packet */
251 show_msg((char *)req->outbuf);
252 if (!srv_send_smb(xconn,
253 (char *)req->outbuf,
254 true, req->seqnum+1,
255 IS_CONN_ENCRYPTED(conn),
256 &req->pcd)) {
257 exit_server_cleanly("send_nt_replies: srv_send_smb failed.");
258 }
259
260 TALLOC_FREE(req->outbuf);
261
262 pp += params_sent_thistime;
263 pd += data_sent_thistime;
264
265 params_to_send -= params_sent_thistime;
266 data_to_send -= data_sent_thistime;
267
268 /*
269 * Sanity check
270 */
271
272 if(params_to_send < 0 || data_to_send < 0) {
273 DEBUG(0,("send_nt_replies failed sanity check pts = %d, dts = %d\n!!!",
274 params_to_send, data_to_send));
275 exit_server_cleanly("send_nt_replies: internal error");
276 }
277 }
278 }
279
280 /****************************************************************************
281 Reply to an NT create and X call on a pipe
282 ****************************************************************************/
283
284 static void nt_open_pipe(char *fname, connection_struct *conn,
285 struct smb_request *req, uint16_t *ppnum)
286 {
287 files_struct *fsp;
288 NTSTATUS status;
289
290 DEBUG(4,("nt_open_pipe: Opening pipe %s.\n", fname));
291
292 /* Strip \\ off the name if present. */
293 while (fname[0] == '\\') {
294 fname++;
295 }
296
297 status = open_np_file(req, fname, &fsp);
298 if (!NT_STATUS_IS_OK(status)) {
299 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
300 reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND,
301 ERRDOS, ERRbadpipe);
302 return;
303 }
304 reply_nterror(req, status);
305 return;
306 }
307
308 *ppnum = fsp->fnum;
309 return;
310 }
311
312 /****************************************************************************
313 Reply to an NT create and X call for pipes.
314 ****************************************************************************/
315
316 static void do_ntcreate_pipe_open(connection_struct *conn,
317 struct smb_request *req)
318 {
319 char *fname = NULL;
320 uint16_t pnum = FNUM_FIELD_INVALID;
321 char *p = NULL;
322 uint32_t flags = IVAL(req->vwv+3, 1);
323 TALLOC_CTX *ctx = talloc_tos();
324
325 srvstr_pull_req_talloc(ctx, req, &fname, req->buf, STR_TERMINATE);
326
327 if (!fname) {
328 reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND,
329 ERRDOS, ERRbadpipe);
330 return;
331 }
332 nt_open_pipe(fname, conn, req, &pnum);
333
334 if (req->outbuf) {
335 /* error reply */
336 return;
337 }
338
339 /*
340 * Deal with pipe return.
341 */
342
343 if (flags & EXTENDED_RESPONSE_REQUIRED) {
344 /* This is very strange. We
345 * return 50 words, but only set
346 * the wcnt to 42 ? It's definitely
347 * what happens on the wire....
348 */
349 reply_outbuf(req, 50, 0);
350 SCVAL(req->outbuf,smb_wct,42);
351 } else {
352 reply_outbuf(req, 34, 0);
353 }
354
355 SSVAL(req->outbuf, smb_vwv0, 0xff); /* andx chain ends */
356 SSVAL(req->outbuf, smb_vwv1, 0); /* no andx offset */
357
358 p = (char *)req->outbuf + smb_vwv2;
359 p++;
360 SSVAL(p,0,pnum);
361 p += 2;
362 SIVAL(p,0,FILE_WAS_OPENED);
363 p += 4;
364 p += 32;
365 SIVAL(p,0,FILE_ATTRIBUTE_NORMAL); /* File Attributes. */
366 p += 20;
367 /* File type. */
368 SSVAL(p,0,FILE_TYPE_MESSAGE_MODE_PIPE);
369 /* Device state. */
370 SSVAL(p,2, 0x5FF); /* ? */
371 p += 4;
372
373 if (flags & EXTENDED_RESPONSE_REQUIRED) {
374 p += 25;
375 SIVAL(p,0,FILE_GENERIC_ALL);
376 /*
377 * For pipes W2K3 seems to return
378 * 0x12019B next.
379 * This is ((FILE_GENERIC_READ|FILE_GENERIC_WRITE) & ~FILE_APPEND_DATA)
380 */
381 SIVAL(p,4,(FILE_GENERIC_READ|FILE_GENERIC_WRITE)&~FILE_APPEND_DATA);
382 }
383
384 DEBUG(5,("do_ntcreate_pipe_open: open pipe = %s\n", fname));
385 }
386
387 struct case_semantics_state {
388 connection_struct *conn;
389 bool case_sensitive;
390 bool case_preserve;
391 bool short_case_preserve;
392 };
393
394 /****************************************************************************
395 Restore case semantics.
396 ****************************************************************************/
397
398 static int restore_case_semantics(struct case_semantics_state *state)
399 {
400 state->conn->case_sensitive = state->case_sensitive;
401 state->conn->case_preserve = state->case_preserve;
402 state->conn->short_case_preserve = state->short_case_preserve;
403 return 0;
404 }
405
406 /****************************************************************************
407 Save case semantics.
408 ****************************************************************************/
409
410 static struct case_semantics_state *set_posix_case_semantics(TALLOC_CTX *mem_ctx,
411 connection_struct *conn)
412 {
413 struct case_semantics_state *result;
414
415 if (!(result = talloc(mem_ctx, struct case_semantics_state))) {
416 return NULL;
417 }
418
419 result->conn = conn;
420 result->case_sensitive = conn->case_sensitive;
421 result->case_preserve = conn->case_preserve;
422 result->short_case_preserve = conn->short_case_preserve;
423
424 /* Set to POSIX. */
425 conn->case_sensitive = True;
426 conn->case_preserve = True;
427 conn->short_case_preserve = True;
428
429 talloc_set_destructor(result, restore_case_semantics);
430
431 return result;
432 }
433
434 /****************************************************************************
435 Reply to an NT create and X call.
436 ****************************************************************************/
437
438 void reply_ntcreate_and_X(struct smb_request *req)
439 {
440 connection_struct *conn = req->conn;
441 struct smb_filename *smb_fname = NULL;
442 char *fname = NULL;
443 uint32_t flags;
444 uint32_t access_mask;
445 uint32_t file_attributes;
446 uint32_t share_access;
447 uint32_t create_disposition;
448 uint32_t create_options;
449 uint16_t root_dir_fid;
450 uint64_t allocation_size;
451 /* Breakout the oplock request bits so we can set the
452 reply bits separately. */
453 uint32_t fattr=0;
454 off_t file_len = 0;
455 int info = 0;
456 files_struct *fsp = NULL;
457 char *p = NULL;
458 struct timespec create_timespec;
459 struct timespec c_timespec;
460 struct timespec a_timespec;
461 struct timespec m_timespec;
462 NTSTATUS status;
463 int oplock_request;
464 uint8_t oplock_granted = NO_OPLOCK_RETURN;
465 struct case_semantics_state *case_state = NULL;
466 uint32_t ucf_flags;
467 TALLOC_CTX *ctx = talloc_tos();
468
469 START_PROFILE(SMBntcreateX);
470
471 if (req->wct < 24) {
472 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
473 goto out;
474 }
475
476 flags = IVAL(req->vwv+3, 1);
477 access_mask = IVAL(req->vwv+7, 1);
478 file_attributes = IVAL(req->vwv+13, 1);
479 share_access = IVAL(req->vwv+15, 1);
480 create_disposition = IVAL(req->vwv+17, 1);
481 create_options = IVAL(req->vwv+19, 1);
482 root_dir_fid = (uint16_t)IVAL(req->vwv+5, 1);
483
484 allocation_size = BVAL(req->vwv+9, 1);
485
486 srvstr_get_path_req(ctx, req, &fname, (const char *)req->buf,
487 STR_TERMINATE, &status);
488
489 if (!NT_STATUS_IS_OK(status)) {
490 reply_nterror(req, status);
491 goto out;
492 }
493
494 DEBUG(10,("reply_ntcreate_and_X: flags = 0x%x, access_mask = 0x%x "
495 "file_attributes = 0x%x, share_access = 0x%x, "
496 "create_disposition = 0x%x create_options = 0x%x "
497 "root_dir_fid = 0x%x, fname = %s\n",
498 (unsigned int)flags,
499 (unsigned int)access_mask,
500 (unsigned int)file_attributes,
501 (unsigned int)share_access,
502 (unsigned int)create_disposition,
503 (unsigned int)create_options,
504 (unsigned int)root_dir_fid,
505 fname));
506
507 /*
508 * we need to remove ignored bits when they come directly from the client
509 * because we reuse some of them for internal stuff
510 */
511 create_options &= ~NTCREATEX_OPTIONS_MUST_IGNORE_MASK;
512
513 /*
514 * If it's an IPC, use the pipe handler.
515 */
516
517 if (IS_IPC(conn)) {
518 if (lp_nt_pipe_support()) {
519 do_ntcreate_pipe_open(conn, req);
520 goto out;
521 }
522 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
523 goto out;
524 }
525
526 oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0;
527 if (oplock_request) {
528 oplock_request |= (flags & REQUEST_BATCH_OPLOCK)
529 ? BATCH_OPLOCK : 0;
530 }
531
532 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
533 case_state = set_posix_case_semantics(ctx, conn);
534 if (!case_state) {
535 reply_nterror(req, NT_STATUS_NO_MEMORY);
536 goto out;
537 }
538 }
539
540 ucf_flags = filename_create_ucf_flags(req, create_disposition);
541 status = filename_convert(ctx,
542 conn,
543 fname,
544 ucf_flags,
545 NULL,
546 NULL,
547 &smb_fname);
548
549 TALLOC_FREE(case_state);
550
551 if (!NT_STATUS_IS_OK(status)) {
552 if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) {
553 reply_botherror(req,
554 NT_STATUS_PATH_NOT_COVERED,
555 ERRSRV, ERRbadpath);
556 goto out;
557 }
558 reply_nterror(req, status);
559 goto out;
560 }
561
562 /*
563 * Bug #6898 - clients using Windows opens should
564 * never be able to set this attribute into the
565 * VFS.
566 */
567 file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
568
569 status = SMB_VFS_CREATE_FILE(
570 conn, /* conn */
571 req, /* req */
572 root_dir_fid, /* root_dir_fid */
573 smb_fname, /* fname */
574 access_mask, /* access_mask */
575 share_access, /* share_access */
576 create_disposition, /* create_disposition*/
577 create_options, /* create_options */
578 file_attributes, /* file_attributes */
579 oplock_request, /* oplock_request */
580 NULL, /* lease */
581 allocation_size, /* allocation_size */
582 0, /* private_flags */
583 NULL, /* sd */
584 NULL, /* ea_list */
585 &fsp, /* result */
586 &info, /* pinfo */
587 NULL, NULL); /* create context */
588
589 if (!NT_STATUS_IS_OK(status)) {
590 if (open_was_deferred(req->xconn, req->mid)) {
591 /* We have re-scheduled this call, no error. */
592 goto out;
593 }
594 reply_openerror(req, status);
595 goto out;
596 }
597
598 /* Ensure we're pointing at the correct stat struct. */
599 TALLOC_FREE(smb_fname);
600 smb_fname = fsp->fsp_name;
601
602 /*
603 * If the caller set the extended oplock request bit
604 * and we granted one (by whatever means) - set the
605 * correct bit for extended oplock reply.
606 */
607
608 if (oplock_request &&
609 (lp_fake_oplocks(SNUM(conn))
610 || EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type))) {
611
612 /*
613 * Exclusive oplock granted
614 */
615
616 if (flags & REQUEST_BATCH_OPLOCK) {
617 oplock_granted = BATCH_OPLOCK_RETURN;
618 } else {
619 oplock_granted = EXCLUSIVE_OPLOCK_RETURN;
620 }
621 } else if (fsp->oplock_type == LEVEL_II_OPLOCK) {
622 oplock_granted = LEVEL_II_OPLOCK_RETURN;
623 } else {
624 oplock_granted = NO_OPLOCK_RETURN;
625 }
626
627 file_len = smb_fname->st.st_ex_size;
628
629 if (flags & EXTENDED_RESPONSE_REQUIRED) {
630 /* This is very strange. We
631 * return 50 words, but only set
632 * the wcnt to 42 ? It's definitely
633 * what happens on the wire....
634 */
635 reply_outbuf(req, 50, 0);
636 SCVAL(req->outbuf,smb_wct,42);
637 } else {
638 reply_outbuf(req, 34, 0);
639 }
640
641 SSVAL(req->outbuf, smb_vwv0, 0xff); /* andx chain ends */
642 SSVAL(req->outbuf, smb_vwv1, 0); /* no andx offset */
643
644 p = (char *)req->outbuf + smb_vwv2;
645
646 SCVAL(p, 0, oplock_granted);
647
648 p++;
649 SSVAL(p,0,fsp->fnum);
650 p += 2;
651 if ((create_disposition == FILE_SUPERSEDE)
652 && (info == FILE_WAS_OVERWRITTEN)) {
653 SIVAL(p,0,FILE_WAS_SUPERSEDED);
654 } else {
655 SIVAL(p,0,info);
656 }
657 p += 4;
658
659 fattr = dos_mode(conn, smb_fname);
660 if (fattr == 0) {
661 fattr = FILE_ATTRIBUTE_NORMAL;
662 }
663
664 /* Create time. */
665 create_timespec = get_create_timespec(conn, fsp, smb_fname);
666 a_timespec = smb_fname->st.st_ex_atime;
667 m_timespec = smb_fname->st.st_ex_mtime;
668 c_timespec = get_change_timespec(conn, fsp, smb_fname);
669
670 if (lp_dos_filetime_resolution(SNUM(conn))) {
671 dos_filetime_timespec(&create_timespec);
672 dos_filetime_timespec(&a_timespec);
673 dos_filetime_timespec(&m_timespec);
674 dos_filetime_timespec(&c_timespec);
675 }
676
677 put_long_date_timespec(conn->ts_res, p, create_timespec); /* create time. */
678 p += 8;
679 put_long_date_timespec(conn->ts_res, p, a_timespec); /* access time */
680 p += 8;
681 put_long_date_timespec(conn->ts_res, p, m_timespec); /* write time */
682 p += 8;
683 put_long_date_timespec(conn->ts_res, p, c_timespec); /* change time */
684 p += 8;
685 SIVAL(p,0,fattr); /* File Attributes. */
686 p += 4;
687 SOFF_T(p, 0, SMB_VFS_GET_ALLOC_SIZE(conn,fsp,&smb_fname->st));
688 p += 8;
689 SOFF_T(p,0,file_len);
690 p += 8;
691 if (flags & EXTENDED_RESPONSE_REQUIRED) {
692 uint16_t file_status = (NO_EAS|NO_SUBSTREAMS|NO_REPARSETAG);
693 unsigned int num_streams = 0;
694 struct stream_struct *streams = NULL;
695
696 if (lp_ea_support(SNUM(conn))) {
697 size_t num_names = 0;
698 /* Do we have any EA's ? */
699 status = get_ea_names_from_file(
700 ctx, conn, fsp, smb_fname, NULL, &num_names);
701 if (NT_STATUS_IS_OK(status) && num_names) {
702 file_status &= ~NO_EAS;
703 }
704 }
705
706 status = vfs_streaminfo(conn, NULL, smb_fname, ctx,
707 &num_streams, &streams);
708 /* There is always one stream, ::$DATA. */
709 if (NT_STATUS_IS_OK(status) && num_streams > 1) {
710 file_status &= ~NO_SUBSTREAMS;
711 }
712 TALLOC_FREE(streams);
713 SSVAL(p,2,file_status);
714 }
715 p += 4;
716 SCVAL(p,0,fsp->is_directory ? 1 : 0);
717
718 if (flags & EXTENDED_RESPONSE_REQUIRED) {
719 uint32_t perms = 0;
720 p += 25;
721 if (fsp->is_directory ||
722 fsp->can_write ||
723 can_write_to_file(conn, smb_fname)) {
724 perms = FILE_GENERIC_ALL;
725 } else {
726 perms = FILE_GENERIC_READ|FILE_EXECUTE;
727 }
728 SIVAL(p,0,perms);
729 }
730
731 DEBUG(5,("reply_ntcreate_and_X: %s, open name = %s\n",
732 fsp_fnum_dbg(fsp), smb_fname_str_dbg(smb_fname)));
733
734 out:
735 END_PROFILE(SMBntcreateX);
736 return;
737 }
738
739 /****************************************************************************
740 Reply to a NT_TRANSACT_CREATE call to open a pipe.
741 ****************************************************************************/
742
743 static void do_nt_transact_create_pipe(connection_struct *conn,
744 struct smb_request *req,
745 uint16_t **ppsetup, uint32_t setup_count,
746 char **ppparams, uint32_t parameter_count,
747 char **ppdata, uint32_t data_count)
748 {
749 char *fname = NULL;
750 char *params = *ppparams;
751 uint16_t pnum = FNUM_FIELD_INVALID;
752 char *p = NULL;
753 NTSTATUS status;
754 size_t param_len;
755 uint32_t flags;
756 TALLOC_CTX *ctx = talloc_tos();
757
758 /*
759 * Ensure minimum number of parameters sent.
760 */
761
762 if(parameter_count < 54) {
763 DEBUG(0,("do_nt_transact_create_pipe - insufficient parameters (%u)\n", (unsigned int)parameter_count));
764 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
765 return;
766 }
767
768 flags = IVAL(params,0);
769
770 if (req->posix_pathnames) {
771 srvstr_get_path_posix(ctx,
772 params,
773 req->flags2,
774 &fname,
775 params+53,
776 parameter_count-53,
777 STR_TERMINATE,
778 &status);
779 } else {
780 srvstr_get_path(ctx,
781 params,
782 req->flags2,
783 &fname,
784 params+53,
785 parameter_count-53,
786 STR_TERMINATE,
787 &status);
788 }
789 if (!NT_STATUS_IS_OK(status)) {
790 reply_nterror(req, status);
791 return;
792 }
793
794 nt_open_pipe(fname, conn, req, &pnum);
795
796 if (req->outbuf) {
797 /* Error return */
798 return;
799 }
800
801 /* Realloc the size of parameters and data we will return */
802 if (flags & EXTENDED_RESPONSE_REQUIRED) {
803 /* Extended response is 32 more byyes. */
804 param_len = 101;
805 } else {
806 param_len = 69;
807 }
808 params = nttrans_realloc(ppparams, param_len);
809 if(params == NULL) {
810 reply_nterror(req, NT_STATUS_NO_MEMORY);
811 return;
812 }
813
814 p = params;
815 SCVAL(p,0,NO_OPLOCK_RETURN);
816
817 p += 2;
818 SSVAL(p,0,pnum);
819 p += 2;
820 SIVAL(p,0,FILE_WAS_OPENED);
821 p += 8;
822
823 p += 32;
824 SIVAL(p,0,FILE_ATTRIBUTE_NORMAL); /* File Attributes. */
825 p += 20;
826 /* File type. */
827 SSVAL(p,0,FILE_TYPE_MESSAGE_MODE_PIPE);
828 /* Device state. */
829 SSVAL(p,2, 0x5FF); /* ? */
830 p += 4;
831
832 if (flags & EXTENDED_RESPONSE_REQUIRED) {
833 p += 25;
834 SIVAL(p,0,FILE_GENERIC_ALL);
835 /*
836 * For pipes W2K3 seems to return
837 * 0x12019B next.
838 * This is ((FILE_GENERIC_READ|FILE_GENERIC_WRITE) & ~FILE_APPEND_DATA)
839 */
840 SIVAL(p,4,(FILE_GENERIC_READ|FILE_GENERIC_WRITE)&~FILE_APPEND_DATA);
841 }
842
843 DEBUG(5,("do_nt_transact_create_pipe: open name = %s\n", fname));
844
845 /* Send the required number of replies */
846 send_nt_replies(conn, req, NT_STATUS_OK, params, param_len, *ppdata, 0);
847
848 return;
849 }
850
851 /*********************************************************************
852 Windows seems to do canonicalization of inheritance bits. Do the
853 same.
854 *********************************************************************/
855
856 static void canonicalize_inheritance_bits(struct security_descriptor *psd)
857 {
858 bool set_auto_inherited = false;
859
860 /*
861 * We need to filter out the
862 * SEC_DESC_DACL_AUTO_INHERITED|SEC_DESC_DACL_AUTO_INHERIT_REQ
863 * bits. If both are set we store SEC_DESC_DACL_AUTO_INHERITED
864 * as this alters whether SEC_ACE_FLAG_INHERITED_ACE is set
865 * when an ACE is inherited. Otherwise we zero these bits out.
866 * See:
867 *
868 * http://social.msdn.microsoft.com/Forums/eu/os_fileservices/thread/11f77b68-731e-407d-b1b3-064750716531
869 *
870 * for details.
871 */
872
873 if ((psd->type & (SEC_DESC_DACL_AUTO_INHERITED|SEC_DESC_DACL_AUTO_INHERIT_REQ))
874 == (SEC_DESC_DACL_AUTO_INHERITED|SEC_DESC_DACL_AUTO_INHERIT_REQ)) {
875 set_auto_inherited = true;
876 }
877
878 psd->type &= ~(SEC_DESC_DACL_AUTO_INHERITED|SEC_DESC_DACL_AUTO_INHERIT_REQ);
879 if (set_auto_inherited) {
880 psd->type |= SEC_DESC_DACL_AUTO_INHERITED;
881 }
882 }
883
884 /****************************************************************************
885 Internal fn to set security descriptors.
886 ****************************************************************************/
887
888 NTSTATUS set_sd(files_struct *fsp, struct security_descriptor *psd,
889 uint32_t security_info_sent)
890 {
891 NTSTATUS status;
892
893 if (!CAN_WRITE(fsp->conn)) {
894 return NT_STATUS_ACCESS_DENIED;
895 }
896
897 if (!lp_nt_acl_support(SNUM(fsp->conn))) {
898 return NT_STATUS_OK;
899 }
900
901 if (S_ISLNK(fsp->fsp_name->st.st_ex_mode)) {
902 DEBUG(10, ("ACL set on symlink %s denied.\n",
903 fsp_str_dbg(fsp)));
904 return NT_STATUS_ACCESS_DENIED;
905 }
906
907 if (psd->owner_sid == NULL) {
908 security_info_sent &= ~SECINFO_OWNER;
909 }
910 if (psd->group_sid == NULL) {
911 security_info_sent &= ~SECINFO_GROUP;
912 }
913
914 /* Ensure we have at least one thing set. */
915 if ((security_info_sent & (SECINFO_OWNER|SECINFO_GROUP|SECINFO_DACL|SECINFO_SACL)) == 0) {
916 /* Just like W2K3 */
917 return NT_STATUS_OK;
918 }
919
920 /* Ensure we have the rights to do this. */
921 if (security_info_sent & SECINFO_OWNER) {
922 if (!(fsp->access_mask & SEC_STD_WRITE_OWNER)) {
923 return NT_STATUS_ACCESS_DENIED;
924 }
925 }
926
927 if (security_info_sent & SECINFO_GROUP) {
928 if (!(fsp->access_mask & SEC_STD_WRITE_OWNER)) {
929 return NT_STATUS_ACCESS_DENIED;
930 }
931 }
932
933 if (security_info_sent & SECINFO_DACL) {
934 if (!(fsp->access_mask & SEC_STD_WRITE_DAC)) {
935 return NT_STATUS_ACCESS_DENIED;
936 }
937 /* Convert all the generic bits. */
938 if (psd->dacl) {
939 security_acl_map_generic(psd->dacl, &file_generic_mapping);
940 }
941 }
942
943 if (security_info_sent & SECINFO_SACL) {
944 if (!(fsp->access_mask & SEC_FLAG_SYSTEM_SECURITY)) {
945 return NT_STATUS_ACCESS_DENIED;
946 }
947 /* Convert all the generic bits. */
948 if (psd->sacl) {
949 security_acl_map_generic(psd->sacl, &file_generic_mapping);
950 }
951 }
952
953 canonicalize_inheritance_bits(psd);
954
955 if (DEBUGLEVEL >= 10) {
956 DEBUG(10,("set_sd for file %s\n", fsp_str_dbg(fsp)));
957 NDR_PRINT_DEBUG(security_descriptor, psd);
958 }
959
960 status = SMB_VFS_FSET_NT_ACL(fsp, security_info_sent, psd);
961
962 TALLOC_FREE(psd);
963
964 return status;
965 }
966
967 /****************************************************************************
968 Internal fn to set security descriptors from a data blob.
969 ****************************************************************************/
970
971 NTSTATUS set_sd_blob(files_struct *fsp, uint8_t *data, uint32_t sd_len,
972 uint32_t security_info_sent)
973 {
974 struct security_descriptor *psd = NULL;
975 NTSTATUS status;
976
977 if (sd_len == 0) {
978 return NT_STATUS_INVALID_PARAMETER;
979 }
980
981 status = unmarshall_sec_desc(talloc_tos(), data, sd_len, &psd);
982
983 if (!NT_STATUS_IS_OK(status)) {
984 return status;
985 }
986
987 return set_sd(fsp, psd, security_info_sent);
988 }
989
990 /****************************************************************************
991 Reply to a NT_TRANSACT_CREATE call (needs to process SD's).
992 ****************************************************************************/
993
994 static void call_nt_transact_create(connection_struct *conn,
995 struct smb_request *req,
996 uint16_t **ppsetup, uint32_t setup_count,
997 char **ppparams, uint32_t parameter_count,
998 char **ppdata, uint32_t data_count,
999 uint32_t max_data_count)
1000 {
1001 struct smb_filename *smb_fname = NULL;
1002 char *fname = NULL;
1003 char *params = *ppparams;
1004 char *data = *ppdata;
1005 /* Breakout the oplock request bits so we can set the reply bits separately. */
1006 uint32_t fattr=0;
1007 off_t file_len = 0;
1008 int info = 0;
1009 files_struct *fsp = NULL;
1010 char *p = NULL;
1011 uint32_t flags;
1012 uint32_t access_mask;
1013 uint32_t file_attributes;
1014 uint32_t share_access;
1015 uint32_t create_disposition;
1016 uint32_t create_options;
1017 uint32_t sd_len;
1018 struct security_descriptor *sd = NULL;
1019 uint32_t ea_len;
1020 uint16_t root_dir_fid;
1021 struct timespec create_timespec;
1022 struct timespec c_timespec;
1023 struct timespec a_timespec;
1024 struct timespec m_timespec;
1025 struct ea_list *ea_list = NULL;
1026 NTSTATUS status;
1027 size_t param_len;
1028 uint64_t allocation_size;
1029 int oplock_request;
1030 uint8_t oplock_granted;
1031 struct case_semantics_state *case_state = NULL;
1032 uint32_t ucf_flags;
1033 TALLOC_CTX *ctx = talloc_tos();
1034
1035 DEBUG(5,("call_nt_transact_create\n"));
1036
1037 /*
1038 * If it's an IPC, use the pipe handler.
1039 */
1040
1041 if (IS_IPC(conn)) {
1042 if (lp_nt_pipe_support()) {
1043 do_nt_transact_create_pipe(
1044 conn, req,
1045 ppsetup, setup_count,
1046 ppparams, parameter_count,
1047 ppdata, data_count);
1048 goto out;
1049 }
1050 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
1051 goto out;
1052 }
1053
1054 /*
1055 * Ensure minimum number of parameters sent.
1056 */
1057
1058 if(parameter_count < 54) {
1059 DEBUG(0,("call_nt_transact_create - insufficient parameters (%u)\n", (unsigned int)parameter_count));
1060 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1061 goto out;
1062 }
1063
1064 flags = IVAL(params,0);
1065 access_mask = IVAL(params,8);
1066 file_attributes = IVAL(params,20);
1067 share_access = IVAL(params,24);
1068 create_disposition = IVAL(params,28);
1069 create_options = IVAL(params,32);
1070 sd_len = IVAL(params,36);
1071 ea_len = IVAL(params,40);
1072 root_dir_fid = (uint16_t)IVAL(params,4);
1073 allocation_size = BVAL(params,12);
1074
1075 /*
1076 * we need to remove ignored bits when they come directly from the client
1077 * because we reuse some of them for internal stuff
1078 */
1079 create_options &= ~NTCREATEX_OPTIONS_MUST_IGNORE_MASK;
1080
1081 if (req->posix_pathnames) {
1082 srvstr_get_path_posix(ctx,
1083 params,
1084 req->flags2,
1085 &fname,
1086 params+53,
1087 parameter_count-53,
1088 STR_TERMINATE,
1089 &status);
1090 } else {
1091 srvstr_get_path(ctx,
1092 params,
1093 req->flags2,
1094 &fname,
1095 params+53,
1096 parameter_count-53,
1097 STR_TERMINATE,
1098 &status);
1099 }
1100 if (!NT_STATUS_IS_OK(status)) {
1101 reply_nterror(req, status);
1102 goto out;
1103 }
1104
1105 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
1106 case_state = set_posix_case_semantics(ctx, conn);
1107 if (!case_state) {
1108 reply_nterror(req, NT_STATUS_NO_MEMORY);
1109 goto out;
1110 }
1111 }
1112
1113 ucf_flags = filename_create_ucf_flags(req, create_disposition);
1114 status = filename_convert(ctx,
1115 conn,
1116 fname,
1117 ucf_flags,
1118 NULL,
1119 NULL,
1120 &smb_fname);
1121
1122 TALLOC_FREE(case_state);
1123
1124 if (!NT_STATUS_IS_OK(status)) {
1125 if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) {
1126 reply_botherror(req,
1127 NT_STATUS_PATH_NOT_COVERED,
1128 ERRSRV, ERRbadpath);
1129 goto out;
1130 }
1131 reply_nterror(req, status);
1132 goto out;
1133 }
1134
1135 /* Ensure the data_len is correct for the sd and ea values given. */
1136 if ((ea_len + sd_len > data_count)
1137 || (ea_len > data_count) || (sd_len > data_count)
1138 || (ea_len + sd_len < ea_len) || (ea_len + sd_len < sd_len)) {
1139 DEBUG(10, ("call_nt_transact_create - ea_len = %u, sd_len = "
1140 "%u, data_count = %u\n", (unsigned int)ea_len,
1141 (unsigned int)sd_len, (unsigned int)data_count));
1142 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1143 goto out;
1144 }
1145
1146 if (sd_len) {
1147 DEBUG(10, ("call_nt_transact_create - sd_len = %d\n",
1148 sd_len));
1149
1150 status = unmarshall_sec_desc(ctx, (uint8_t *)data, sd_len,
1151 &sd);
1152 if (!NT_STATUS_IS_OK(status)) {
1153 DEBUG(10, ("call_nt_transact_create: "
1154 "unmarshall_sec_desc failed: %s\n",
1155 nt_errstr(status)));
1156 reply_nterror(req, status);
1157 goto out;
1158 }
1159 }
1160
1161 if (ea_len) {
1162 if (!lp_ea_support(SNUM(conn))) {
1163 DEBUG(10, ("call_nt_transact_create - ea_len = %u but "
1164 "EA's not supported.\n",
1165 (unsigned int)ea_len));
1166 reply_nterror(req, NT_STATUS_EAS_NOT_SUPPORTED);
1167 goto out;
1168 }
1169
1170 if (ea_len < 10) {
1171 DEBUG(10,("call_nt_transact_create - ea_len = %u - "
1172 "too small (should be more than 10)\n",
1173 (unsigned int)ea_len ));
1174 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1175 goto out;
1176 }
1177
1178 /* We have already checked that ea_len <= data_count here. */
1179 ea_list = read_nttrans_ea_list(talloc_tos(), data + sd_len,
1180 ea_len);
1181 if (ea_list == NULL) {
1182 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1183 goto out;
1184 }
1185
1186 if (!req->posix_pathnames &&
1187 ea_list_has_invalid_name(ea_list)) {
1188 /* Realloc the size of parameters and data we will return */
1189 if (flags & EXTENDED_RESPONSE_REQUIRED) {
1190 /* Extended response is 32 more byyes. */
1191 param_len = 101;
1192 } else {
1193 param_len = 69;
1194 }
1195 params = nttrans_realloc(ppparams, param_len);
1196 if(params == NULL) {
1197 reply_nterror(req, NT_STATUS_NO_MEMORY);
1198 goto out;
1199 }
1200
1201 memset(params, '\0', param_len);
1202 send_nt_replies(conn, req, STATUS_INVALID_EA_NAME,
1203 params, param_len, NULL, 0);
1204 goto out;
1205 }
1206 }
1207
1208 oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0;
1209 if (oplock_request) {
1210 oplock_request |= (flags & REQUEST_BATCH_OPLOCK)
1211 ? BATCH_OPLOCK : 0;
1212 }
1213
1214 /*
1215 * Bug #6898 - clients using Windows opens should
1216 * never be able to set this attribute into the
1217 * VFS.
1218 */
1219 file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
1220
1221 status = SMB_VFS_CREATE_FILE(
1222 conn, /* conn */
1223 req, /* req */
1224 root_dir_fid, /* root_dir_fid */
1225 smb_fname, /* fname */
1226 access_mask, /* access_mask */
1227 share_access, /* share_access */
1228 create_disposition, /* create_disposition*/
1229 create_options, /* create_options */
1230 file_attributes, /* file_attributes */
1231 oplock_request, /* oplock_request */
1232 NULL, /* lease */
1233 allocation_size, /* allocation_size */
1234 0, /* private_flags */
1235 sd, /* sd */
1236 ea_list, /* ea_list */
1237 &fsp, /* result */
1238 &info, /* pinfo */
1239 NULL, NULL); /* create context */
1240
1241 if(!NT_STATUS_IS_OK(status)) {
1242 if (open_was_deferred(req->xconn, req->mid)) {
1243 /* We have re-scheduled this call, no error. */
1244 return;
1245 }
1246 reply_openerror(req, status);
1247 goto out;
1248 }
1249
1250 /* Ensure we're pointing at the correct stat struct. */
1251 TALLOC_FREE(smb_fname);
1252 smb_fname = fsp->fsp_name;
1253
1254 /*
1255 * If the caller set the extended oplock request bit
1256 * and we granted one (by whatever means) - set the
1257 * correct bit for extended oplock reply.
1258 */
1259
1260 if (oplock_request &&
1261 (lp_fake_oplocks(SNUM(conn))
1262 || EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type))) {
1263
1264 /*
1265 * Exclusive oplock granted
1266 */
1267
1268 if (flags & REQUEST_BATCH_OPLOCK) {
1269 oplock_granted = BATCH_OPLOCK_RETURN;
1270 } else {
1271 oplock_granted = EXCLUSIVE_OPLOCK_RETURN;
1272 }
1273 } else if (fsp->oplock_type == LEVEL_II_OPLOCK) {
1274 oplock_granted = LEVEL_II_OPLOCK_RETURN;
1275 } else {
1276 oplock_granted = NO_OPLOCK_RETURN;
1277 }
1278
1279 file_len = smb_fname->st.st_ex_size;
1280
1281 /* Realloc the size of parameters and data we will return */
1282 if (flags & EXTENDED_RESPONSE_REQUIRED) {
1283 /* Extended response is 32 more byyes. */
1284 param_len = 101;
1285 } else {
1286 param_len = 69;
1287 }
1288 params = nttrans_realloc(ppparams, param_len);
1289 if(params == NULL) {
1290 reply_nterror(req, NT_STATUS_NO_MEMORY);
1291 goto out;
1292 }
1293
1294 p = params;
1295 SCVAL(p, 0, oplock_granted);
1296
1297 p += 2;
1298 SSVAL(p,0,fsp->fnum);
1299 p += 2;
1300 if ((create_disposition == FILE_SUPERSEDE)
1301 && (info == FILE_WAS_OVERWRITTEN)) {
1302 SIVAL(p,0,FILE_WAS_SUPERSEDED);
1303 } else {
1304 SIVAL(p,0,info);
1305 }
1306 p += 8;
1307
1308 fattr = dos_mode(conn, smb_fname);
1309 if (fattr == 0) {
1310 fattr = FILE_ATTRIBUTE_NORMAL;
1311 }
1312
1313 /* Create time. */
1314 create_timespec = get_create_timespec(conn, fsp, smb_fname);
1315 a_timespec = smb_fname->st.st_ex_atime;
1316 m_timespec = smb_fname->st.st_ex_mtime;
1317 c_timespec = get_change_timespec(conn, fsp, smb_fname);
1318
1319 if (lp_dos_filetime_resolution(SNUM(conn))) {
1320 dos_filetime_timespec(&create_timespec);
1321 dos_filetime_timespec(&a_timespec);
1322 dos_filetime_timespec(&m_timespec);
1323 dos_filetime_timespec(&c_timespec);
1324 }
1325
1326 put_long_date_timespec(conn->ts_res, p, create_timespec); /* create time. */
1327 p += 8;
1328 put_long_date_timespec(conn->ts_res, p, a_timespec); /* access time */
1329 p += 8;
1330 put_long_date_timespec(conn->ts_res, p, m_timespec); /* write time */
1331 p += 8;
1332 put_long_date_timespec(conn->ts_res, p, c_timespec); /* change time */
1333 p += 8;
1334 SIVAL(p,0,fattr); /* File Attributes. */
1335 p += 4;
1336 SOFF_T(p, 0, SMB_VFS_GET_ALLOC_SIZE(conn, fsp, &smb_fname->st));
1337 p += 8;
1338 SOFF_T(p,0,file_len);
1339 p += 8;
1340 if (flags & EXTENDED_RESPONSE_REQUIRED) {
1341 uint16_t file_status = (NO_EAS|NO_SUBSTREAMS|NO_REPARSETAG);
1342 unsigned int num_streams = 0;
1343 struct stream_struct *streams = NULL;
1344
1345 if (lp_ea_support(SNUM(conn))) {
1346 size_t num_names = 0;
1347 /* Do we have any EA's ? */
1348 status = get_ea_names_from_file(
1349 ctx, conn, fsp, smb_fname, NULL, &num_names);
1350 if (NT_STATUS_IS_OK(status) && num_names) {
1351 file_status &= ~NO_EAS;
1352 }
1353 }
1354
1355 status = vfs_streaminfo(conn, NULL, smb_fname, ctx,
1356 &num_streams, &streams);
1357 /* There is always one stream, ::$DATA. */
1358 if (NT_STATUS_IS_OK(status) && num_streams > 1) {
1359 file_status &= ~NO_SUBSTREAMS;
1360 }
1361 TALLOC_FREE(streams);
1362 SSVAL(p,2,file_status);
1363 }
1364 p += 4;
1365 SCVAL(p,0,fsp->is_directory ? 1 : 0);
1366
1367 if (flags & EXTENDED_RESPONSE_REQUIRED) {
1368 uint32_t perms = 0;
1369 p += 25;
1370 if (fsp->is_directory ||
1371 fsp->can_write ||
1372 can_write_to_file(conn, smb_fname)) {
1373 perms = FILE_GENERIC_ALL;
1374 } else {
1375 perms = FILE_GENERIC_READ|FILE_EXECUTE;
1376 }
1377 SIVAL(p,0,perms);
1378 }
1379
1380 DEBUG(5,("call_nt_transact_create: open name = %s\n",
1381 smb_fname_str_dbg(smb_fname)));
1382
1383 /* Send the required number of replies */
1384 send_nt_replies(conn, req, NT_STATUS_OK, params, param_len, *ppdata, 0);
1385 out:
1386 return;
1387 }
1388
1389 /****************************************************************************
1390 Reply to a NT CANCEL request.
1391 conn POINTER CAN BE NULL HERE !
1392 ****************************************************************************/
1393
1394 void reply_ntcancel(struct smb_request *req)
1395 {
1396 struct smbXsrv_connection *xconn = req->xconn;
1397 struct smbd_server_connection *sconn = req->sconn;
1398
1399 /*
1400 * Go through and cancel any pending change notifies.
1401 */
1402
1403 START_PROFILE(SMBntcancel);
1404 srv_cancel_sign_response(xconn);
1405 remove_pending_change_notify_requests_by_mid(sconn, req->mid);
1406 remove_pending_lock_requests_by_mid_smb1(sconn, req->mid);
1407
1408 DEBUG(3,("reply_ntcancel: cancel called on mid = %llu.\n",
1409 (unsigned long long)req->mid));
1410
1411 END_PROFILE(SMBntcancel);
1412 return;
1413 }
1414
1415 /****************************************************************************
1416 Copy a file.
1417 ****************************************************************************/
1418
1419 static NTSTATUS copy_internals(TALLOC_CTX *ctx,
1420 connection_struct *conn,
1421 struct smb_request *req,
1422 struct smb_filename *smb_fname_src,
1423 struct smb_filename *smb_fname_dst,
1424 uint32_t attrs)
1425 {
1426 files_struct *fsp1,*fsp2;
1427 uint32_t fattr;
1428 int info;
1429 off_t ret=-1;
1430 NTSTATUS status = NT_STATUS_OK;
1431 char *parent;
1432
1433 if (!CAN_WRITE(conn)) {
1434 status = NT_STATUS_MEDIA_WRITE_PROTECTED;
1435 goto out;
1436 }
1437
1438 /* Source must already exist. */
1439 if (!VALID_STAT(smb_fname_src->st)) {
1440 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
1441 goto out;
1442 }
1443
1444 /* Ensure attributes match. */
1445 fattr = dos_mode(conn, smb_fname_src);
1446 if ((fattr & ~attrs) & (FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM)) {
1447 status = NT_STATUS_NO_SUCH_FILE;
1448 goto out;
1449 }
1450
1451 /* Disallow if dst file already exists. */
1452 if (VALID_STAT(smb_fname_dst->st)) {
1453 status = NT_STATUS_OBJECT_NAME_COLLISION;
1454 goto out;
1455 }
1456
1457 /* No links from a directory. */
1458 if (S_ISDIR(smb_fname_src->st.st_ex_mode)) {
1459 status = NT_STATUS_FILE_IS_A_DIRECTORY;
1460 goto out;
1461 }
1462
1463 DEBUG(10,("copy_internals: doing file copy %s to %s\n",
1464 smb_fname_str_dbg(smb_fname_src),
1465 smb_fname_str_dbg(smb_fname_dst)));
1466
1467 status = SMB_VFS_CREATE_FILE(
1468 conn, /* conn */
1469 req, /* req */
1470 0, /* root_dir_fid */
1471 smb_fname_src, /* fname */
1472 FILE_READ_DATA|FILE_READ_ATTRIBUTES|
1473 FILE_READ_EA, /* access_mask */
1474 (FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */
1475 FILE_SHARE_DELETE),
1476 FILE_OPEN, /* create_disposition*/
1477 0, /* create_options */
1478 FILE_ATTRIBUTE_NORMAL, /* file_attributes */
1479 NO_OPLOCK, /* oplock_request */
1480 NULL, /* lease */
1481 0, /* allocation_size */
1482 0, /* private_flags */
1483 NULL, /* sd */
1484 NULL, /* ea_list */
1485 &fsp1, /* result */
1486 &info, /* pinfo */
1487 NULL, NULL); /* create context */
1488
1489 if (!NT_STATUS_IS_OK(status)) {
1490 goto out;
1491 }
1492
1493 status = SMB_VFS_CREATE_FILE(
1494 conn, /* conn */
1495 req, /* req */
1496 0, /* root_dir_fid */
1497 smb_fname_dst, /* fname */
1498 FILE_WRITE_DATA|FILE_WRITE_ATTRIBUTES|
1499 FILE_WRITE_EA, /* access_mask */
1500 (FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */
1501 FILE_SHARE_DELETE),
1502 FILE_CREATE, /* create_disposition*/
1503 0, /* create_options */
1504 fattr, /* file_attributes */
1505 NO_OPLOCK, /* oplock_request */
1506 NULL, /* lease */
1507 0, /* allocation_size */
1508 0, /* private_flags */
1509 NULL, /* sd */
1510 NULL, /* ea_list */
1511 &fsp2, /* result */
1512 &info, /* pinfo */
1513 NULL, NULL); /* create context */
1514
1515 if (!NT_STATUS_IS_OK(status)) {
1516 close_file(NULL, fsp1, ERROR_CLOSE);
1517 goto out;
1518 }
1519
1520 if (smb_fname_src->st.st_ex_size) {
1521 ret = vfs_transfer_file(fsp1, fsp2, smb_fname_src->st.st_ex_size);
1522 }
1523
1524 /*
1525 * As we are opening fsp1 read-only we only expect
1526 * an error on close on fsp2 if we are out of space.
1527 * Thus we don't look at the error return from the
1528 * close of fsp1.
1529 */
1530 close_file(NULL, fsp1, NORMAL_CLOSE);
1531
1532 /* Ensure the modtime is set correctly on the destination file. */
1533 set_close_write_time(fsp2, smb_fname_src->st.st_ex_mtime);
1534
1535 status = close_file(NULL, fsp2, NORMAL_CLOSE);
1536
1537 /* Grrr. We have to do this as open_file_ntcreate adds FILE_ATTRIBUTE_ARCHIVE when it
1538 creates the file. This isn't the correct thing to do in the copy
1539 case. JRA */
1540 if (!parent_dirname(talloc_tos(), smb_fname_dst->base_name, &parent,
1541 NULL)) {
1542 status = NT_STATUS_NO_MEMORY;
1543 goto out;
1544 }
1545 file_set_dosmode(conn, smb_fname_dst, fattr, parent, false);
1546 TALLOC_FREE(parent);
1547
1548 if (ret < (off_t)smb_fname_src->st.st_ex_size) {
1549 status = NT_STATUS_DISK_FULL;
1550 goto out;
1551 }
1552 out:
1553 if (!NT_STATUS_IS_OK(status)) {
1554 DEBUG(3,("copy_internals: Error %s copy file %s to %s\n",
1555 nt_errstr(status), smb_fname_str_dbg(smb_fname_src),
1556 smb_fname_str_dbg(smb_fname_dst)));
1557 }
1558
1559 return status;
1560 }
1561
1562 /****************************************************************************
1563 Reply to a NT rename request.
1564 ****************************************************************************/
1565
1566 void reply_ntrename(struct smb_request *req)
1567 {
1568 connection_struct *conn = req->conn;
1569 struct smb_filename *smb_fname_old = NULL;
1570 struct smb_filename *smb_fname_new = NULL;
1571 char *oldname = NULL;
1572 char *newname = NULL;
1573 const char *p;
1574 NTSTATUS status;
1575 bool src_has_wcard = False;
1576 bool dest_has_wcard = False;
1577 uint32_t attrs;
1578 uint32_t ucf_flags_src = ucf_flags_from_smb_request(req);
1579 uint32_t ucf_flags_dst = ucf_flags_from_smb_request(req);
1580 uint16_t rename_type;
1581 TALLOC_CTX *ctx = talloc_tos();
1582 bool stream_rename = false;
1583
1584 START_PROFILE(SMBntrename);
1585
1586 if (req->wct < 4) {
1587 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1588 goto out;
1589 }
1590
1591 attrs = SVAL(req->vwv+0, 0);
1592 rename_type = SVAL(req->vwv+1, 0);
1593
1594 p = (const char *)req->buf + 1;
1595 p += srvstr_get_path_req_wcard(ctx, req, &oldname, p, STR_TERMINATE,
1596 &status, &src_has_wcard);
1597 if (!NT_STATUS_IS_OK(status)) {
1598 reply_nterror(req, status);
1599 goto out;
1600 }
1601
1602 if (!req->posix_pathnames && ms_has_wild(oldname)) {
1603 reply_nterror(req, NT_STATUS_OBJECT_PATH_SYNTAX_BAD);
1604 goto out;
1605 }
1606
1607 p++;
1608 p += srvstr_get_path_req_wcard(ctx, req, &newname, p, STR_TERMINATE,
1609 &status, &dest_has_wcard);
1610 if (!NT_STATUS_IS_OK(status)) {
1611 reply_nterror(req, status);
1612 goto out;
1613 }
1614
1615 if (!req->posix_pathnames) {
1616 /* The newname must begin with a ':' if the
1617 oldname contains a ':'. */
1618 if (strchr_m(oldname, ':')) {
1619 if (newname[0] != ':') {
1620 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1621 goto out;
1622 }
1623 stream_rename = true;
1624 }
1625 }
1626
1627 /*
1628 * If this is a rename operation, allow wildcards and save the
1629 * destination's last component.
1630 */
1631 if (rename_type == RENAME_FLAG_RENAME) {
1632 ucf_flags_src |= UCF_COND_ALLOW_WCARD_LCOMP;
1633 ucf_flags_dst |= UCF_COND_ALLOW_WCARD_LCOMP | UCF_SAVE_LCOMP;
1634 }
1635
1636 /* rename_internals() calls unix_convert(), so don't call it here. */
1637 status = filename_convert(ctx, conn,
1638 oldname,
1639 ucf_flags_src,
1640 NULL,
1641 NULL,
1642 &smb_fname_old);
1643 if (!NT_STATUS_IS_OK(status)) {
1644 if (NT_STATUS_EQUAL(status,
1645 NT_STATUS_PATH_NOT_COVERED)) {
1646 reply_botherror(req,
1647 NT_STATUS_PATH_NOT_COVERED,
1648 ERRSRV, ERRbadpath);
1649 goto out;
1650 }
1651 reply_nterror(req, status);
1652 goto out;
1653 }
1654
1655 status = filename_convert(ctx, conn,
1656 newname,
1657 ucf_flags_dst,
1658 NULL,
1659 &dest_has_wcard,
1660 &smb_fname_new);
1661 if (!NT_STATUS_IS_OK(status)) {
1662 if (NT_STATUS_EQUAL(status,
1663 NT_STATUS_PATH_NOT_COVERED)) {
1664 reply_botherror(req,
1665 NT_STATUS_PATH_NOT_COVERED,
1666 ERRSRV, ERRbadpath);
1667 goto out;
1668 }
1669 reply_nterror(req, status);
1670 goto out;
1671 }
1672
1673 if (stream_rename) {
1674 /* smb_fname_new must be the same as smb_fname_old. */
1675 TALLOC_FREE(smb_fname_new->base_name);
1676 smb_fname_new->base_name = talloc_strdup(smb_fname_new,
1677 smb_fname_old->base_name);
1678 if (!smb_fname_new->base_name) {
1679 reply_nterror(req, NT_STATUS_NO_MEMORY);
1680 goto out;
1681 }
1682 }
1683
1684 DEBUG(3,("reply_ntrename: %s -> %s\n",
1685 smb_fname_str_dbg(smb_fname_old),
1686 smb_fname_str_dbg(smb_fname_new)));
1687
1688 switch(rename_type) {
1689 case RENAME_FLAG_RENAME:
1690 status = rename_internals(ctx, conn, req,
1691 smb_fname_old, smb_fname_new,
1692 attrs, False, src_has_wcard,
1693 dest_has_wcard,
1694 DELETE_ACCESS);
1695 break;
1696 case RENAME_FLAG_HARD_LINK:
1697 if (src_has_wcard || dest_has_wcard) {
1698 /* No wildcards. */
1699 status = NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
1700 } else {
1701 status = hardlink_internals(ctx, conn,
1702 req,
1703 false,
1704 smb_fname_old,
1705 smb_fname_new);
1706 }
1707 break;
1708 case RENAME_FLAG_COPY:
1709 if (src_has_wcard || dest_has_wcard) {
1710 /* No wildcards. */
1711 status = NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
1712 } else {
1713 status = copy_internals(ctx, conn, req,
1714 smb_fname_old,
1715 smb_fname_new,
1716 attrs);
1717 }
1718 break;
1719 case RENAME_FLAG_MOVE_CLUSTER_INFORMATION:
1720 status = NT_STATUS_INVALID_PARAMETER;
1721 break;
1722 default:
1723 status = NT_STATUS_ACCESS_DENIED; /* Default error. */
1724 break;
1725 }
1726
1727 if (!NT_STATUS_IS_OK(status)) {
1728 if (open_was_deferred(req->xconn, req->mid)) {
1729 /* We have re-scheduled this call. */
1730 goto out;
1731 }
1732
1733 reply_nterror(req, status);
1734 goto out;
1735 }
1736
1737 reply_outbuf(req, 0, 0);
1738 out:
1739 END_PROFILE(SMBntrename);
1740 return;
1741 }
1742
1743 /****************************************************************************
1744 Reply to a notify change - queue the request and
1745 don't allow a directory to be opened.
1746 ****************************************************************************/
1747
1748 static void smbd_smb1_notify_reply(struct smb_request *req,
1749 NTSTATUS error_code,
1750 uint8_t *buf, size_t len)
1751 {
1752 send_nt_replies(req->conn, req, error_code, (char *)buf, len, NULL, 0);
1753 }
1754
1755 static void call_nt_transact_notify_change(connection_struct *conn,
1756 struct smb_request *req,
1757 uint16_t **ppsetup,
1758 uint32_t setup_count,
1759 char **ppparams,
1760 uint32_t parameter_count,
1761 char **ppdata, uint32_t data_count,
1762 uint32_t max_data_count,
1763 uint32_t max_param_count)
1764 {
1765 uint16_t *setup = *ppsetup;
1766 files_struct *fsp;
1767 uint32_t filter;
1768 NTSTATUS status;
1769 bool recursive;
1770
1771 if(setup_count < 6) {
1772 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1773 return;
1774 }
1775
1776 fsp = file_fsp(req, SVAL(setup,4));
1777 filter = IVAL(setup, 0);
1778 recursive = (SVAL(setup, 6) != 0) ? True : False;
1779
1780 DEBUG(3,("call_nt_transact_notify_change\n"));
1781
1782 if(!fsp) {
1783 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
1784 return;
1785 }
1786
1787 {
1788 char *filter_string;
1789
1790 if (!(filter_string = notify_filter_string(NULL, filter))) {
1791 reply_nterror(req,NT_STATUS_NO_MEMORY);
1792 return;
1793 }
1794
1795 DEBUG(3,("call_nt_transact_notify_change: notify change "
1796 "called on %s, filter = %s, recursive = %d\n",
1797 fsp_str_dbg(fsp), filter_string, recursive));
1798
1799 TALLOC_FREE(filter_string);
1800 }
1801
1802 if((!fsp->is_directory) || (conn != fsp->conn)) {
1803 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1804 return;
1805 }
1806
1807 if (fsp->notify == NULL) {
1808
1809 status = change_notify_create(fsp,
1810 max_param_count,
1811 filter,
1812 recursive);
1813 if (!NT_STATUS_IS_OK(status)) {
1814 DEBUG(10, ("change_notify_create returned %s\n",
1815 nt_errstr(status)));
1816 reply_nterror(req, status);
1817 return;
1818 }
1819 }
1820
1821 if (change_notify_fsp_has_changes(fsp)) {
1822
1823 /*
1824 * We've got changes pending, respond immediately
1825 */
1826
1827 /*
1828 * TODO: write a torture test to check the filtering behaviour
1829 * here.
1830 */
1831
1832 change_notify_reply(req,
1833 NT_STATUS_OK,
1834 max_param_count,
1835 fsp->notify,
1836 smbd_smb1_notify_reply);
1837
1838 /*
1839 * change_notify_reply() above has independently sent its
1840 * results
1841 */
1842 return;
1843 }
1844
1845 /*
1846 * No changes pending, queue the request
1847 */
1848
1849 status = change_notify_add_request(req,
1850 max_param_count,
1851 filter,
1852 recursive, fsp,
1853 smbd_smb1_notify_reply);
1854 if (!NT_STATUS_IS_OK(status)) {
1855 reply_nterror(req, status);
1856 }
1857 return;
1858 }
1859
1860 /****************************************************************************
1861 Reply to an NT transact rename command.
1862 ****************************************************************************/
1863
1864 static void call_nt_transact_rename(connection_struct *conn,
1865 struct smb_request *req,
1866 uint16_t **ppsetup, uint32_t setup_count,
1867 char **ppparams, uint32_t parameter_count,
1868 char **ppdata, uint32_t data_count,
1869 uint32_t max_data_count)
1870 {
1871 char *params = *ppparams;
1872 char *new_name = NULL;
1873 files_struct *fsp = NULL;
1874 bool dest_has_wcard = False;
1875 NTSTATUS status;
1876 TALLOC_CTX *ctx = talloc_tos();
1877
1878 if(parameter_count < 5) {
1879 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1880 return;
1881 }
1882
1883 fsp = file_fsp(req, SVAL(params, 0));
1884 if (!check_fsp(conn, req, fsp)) {
1885 return;
1886 }
1887 if (req->posix_pathnames) {
1888 srvstr_get_path_wcard_posix(ctx,
1889 params,
1890 req->flags2,
1891 &new_name,
1892 params+4,
1893 parameter_count - 4,
1894 STR_TERMINATE,
1895 &status,
1896 &dest_has_wcard);
1897 } else {
1898 srvstr_get_path_wcard(ctx,
1899 params,
1900 req->flags2,
1901 &new_name,
1902 params+4,
1903 parameter_count - 4,
1904 STR_TERMINATE,
1905 &status,
1906 &dest_has_wcard);
1907 }
1908
1909 if (!NT_STATUS_IS_OK(status)) {
1910 reply_nterror(req, status);
1911 return;
1912 }
1913
1914 /*
1915 * W2K3 ignores this request as the RAW-RENAME test
1916 * demonstrates, so we do.
1917 */
1918 send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, NULL, 0);
1919
1920 DEBUG(3,("nt transact rename from = %s, to = %s ignored!\n",
1921 fsp_str_dbg(fsp), new_name));
1922
1923 return;
1924 }
1925
1926 /******************************************************************************
1927 Fake up a completely empty SD.
1928 *******************************************************************************/
1929
1930 static NTSTATUS get_null_nt_acl(TALLOC_CTX *mem_ctx, struct security_descriptor **ppsd)
1931 {
1932 size_t sd_size;
1933
1934 *ppsd = make_standard_sec_desc( mem_ctx, &global_sid_World, &global_sid_World, NULL, &sd_size);
1935 if(!*ppsd) {
1936 DEBUG(0,("get_null_nt_acl: Unable to malloc space for security descriptor.\n"));
1937 return NT_STATUS_NO_MEMORY;
1938 }
1939
1940 return NT_STATUS_OK;
1941 }
1942
1943 /****************************************************************************
1944 Reply to query a security descriptor.
1945 Callable from SMB1 and SMB2.
1946 If it returns NT_STATUS_BUFFER_TOO_SMALL, pdata_size is initialized with
1947 the required size.
1948 ****************************************************************************/
1949
1950 NTSTATUS smbd_do_query_security_desc(connection_struct *conn,
1951 TALLOC_CTX *mem_ctx,
1952 files_struct *fsp,
1953 uint32_t security_info_wanted,
1954 uint32_t max_data_count,
1955 uint8_t **ppmarshalled_sd,
1956 size_t *psd_size)
1957 {
1958 NTSTATUS status;
1959 struct security_descriptor *psd = NULL;
1960 TALLOC_CTX *frame = talloc_stackframe();
1961
1962 /*
1963 * Get the permissions to return.
1964 */
1965
1966 if ((security_info_wanted & SECINFO_SACL) &&
1967 !(fsp->access_mask & SEC_FLAG_SYSTEM_SECURITY)) {
1968 DEBUG(10, ("Access to SACL denied.\n"));
1969 TALLOC_FREE(frame);
1970 return NT_STATUS_ACCESS_DENIED;
1971 }
1972
1973 if ((security_info_wanted & (SECINFO_DACL|SECINFO_OWNER|SECINFO_GROUP)) &&
1974 !(fsp->access_mask & SEC_STD_READ_CONTROL)) {
1975 DEBUG(10, ("Access to DACL, OWNER, or GROUP denied.\n"));
1976 TALLOC_FREE(frame);
1977 return NT_STATUS_ACCESS_DENIED;
1978 }
1979
1980 if (S_ISLNK(fsp->fsp_name->st.st_ex_mode)) {
1981 DEBUG(10, ("ACL get on symlink %s denied.\n",
1982 fsp_str_dbg(fsp)));
1983 TALLOC_FREE(frame);
1984 return NT_STATUS_ACCESS_DENIED;
1985 }
1986
1987 if (security_info_wanted & (SECINFO_DACL|SECINFO_OWNER|
1988 SECINFO_GROUP|SECINFO_SACL)) {
1989 /* Don't return SECINFO_LABEL if anything else was
1990 requested. See bug #8458. */
1991 security_info_wanted &= ~SECINFO_LABEL;
1992 }
1993
1994 if (!lp_nt_acl_support(SNUM(conn))) {
1995 status = get_null_nt_acl(frame, &psd);
1996 } else if (security_info_wanted & SECINFO_LABEL) {
1997 /* Like W2K3 return a null object. */
1998 status = get_null_nt_acl(frame, &psd);
1999 } else {
2000 status = SMB_VFS_FGET_NT_ACL(
2001 fsp, security_info_wanted, frame, &psd);
2002 }
2003 if (!NT_STATUS_IS_OK(status)) {
2004 TALLOC_FREE(frame);
2005 return status;
2006 }
2007
2008 if (!(security_info_wanted & SECINFO_OWNER)) {
2009 psd->owner_sid = NULL;
2010 }
2011 if (!(security_info_wanted & SECINFO_GROUP)) {
2012 psd->group_sid = NULL;
2013 }
2014 if (!(security_info_wanted & SECINFO_DACL)) {
2015 psd->type &= ~SEC_DESC_DACL_PRESENT;
2016 psd->dacl = NULL;
2017 }
2018 if (!(security_info_wanted & SECINFO_SACL)) {
2019 psd->type &= ~SEC_DESC_SACL_PRESENT;
2020 psd->sacl = NULL;
2021 }
2022
2023 /* If the SACL/DACL is NULL, but was requested, we mark that it is
2024 * present in the reply to match Windows behavior */
2025 if (psd->sacl == NULL &&
2026 security_info_wanted & SECINFO_SACL)
2027 psd->type |= SEC_DESC_SACL_PRESENT;
2028 if (psd->dacl == NULL &&
2029 security_info_wanted & SECINFO_DACL)
2030 psd->type |= SEC_DESC_DACL_PRESENT;
2031
2032 if (security_info_wanted & SECINFO_LABEL) {
2033 /* Like W2K3 return a null object. */
2034 psd->owner_sid = NULL;
2035 psd->group_sid = NULL;
2036 psd->dacl = NULL;
2037 psd->sacl = NULL;
2038 psd->type &= ~(SEC_DESC_DACL_PRESENT|SEC_DESC_SACL_PRESENT);
2039 }
2040
2041 *psd_size = ndr_size_security_descriptor(psd, 0);
2042
2043 DEBUG(3,("smbd_do_query_security_desc: sd_size = %lu.\n",
2044 (unsigned long)*psd_size));
2045
2046 if (DEBUGLEVEL >= 10) {
2047 DEBUG(10,("smbd_do_query_security_desc for file %s\n",
2048 fsp_str_dbg(fsp)));
2049 NDR_PRINT_DEBUG(security_descriptor, psd);
2050 }
2051
2052 if (max_data_count < *psd_size) {
2053 TALLOC_FREE(frame);
2054 return NT_STATUS_BUFFER_TOO_SMALL;
2055 }
2056
2057 status = marshall_sec_desc(mem_ctx, psd,
2058 ppmarshalled_sd, psd_size);
2059
2060 if (!NT_STATUS_IS_OK(status)) {
2061 TALLOC_FREE(frame);
2062 return status;
2063 }
2064
2065 TALLOC_FREE(frame);
2066 return NT_STATUS_OK;
2067 }
2068
2069 /****************************************************************************
2070 SMB1 reply to query a security descriptor.
2071 ****************************************************************************/
2072
2073 static void call_nt_transact_query_security_desc(connection_struct *conn,
2074 struct smb_request *req,
2075 uint16_t **ppsetup,
2076 uint32_t setup_count,
2077 char **ppparams,
2078 uint32_t parameter_count,
2079 char **ppdata,
2080 uint32_t data_count,
2081 uint32_t max_data_count)
2082 {
2083 char *params = *ppparams;
2084 char *data = *ppdata;
2085 size_t sd_size = 0;
2086 uint32_t security_info_wanted;
2087 files_struct *fsp = NULL;
2088 NTSTATUS status;
2089 uint8_t *marshalled_sd = NULL;
2090
2091 if(parameter_count < 8) {
2092 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2093 return;
2094 }
2095
2096 fsp = file_fsp(req, SVAL(params,0));
2097 if(!fsp) {
2098 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
2099 return;
2100 }
2101
2102 security_info_wanted = IVAL(params,4);
2103
2104 DEBUG(3,("call_nt_transact_query_security_desc: file = %s, "
2105 "info_wanted = 0x%x\n", fsp_str_dbg(fsp),
2106 (unsigned int)security_info_wanted));
2107
2108 params = nttrans_realloc(ppparams, 4);
2109 if(params == NULL) {
2110 reply_nterror(req, NT_STATUS_NO_MEMORY);
2111 return;
2112 }
2113
2114 /*
2115 * Get the permissions to return.
2116 */
2117
2118 status = smbd_do_query_security_desc(conn,
2119 talloc_tos(),
2120 fsp,
2121 security_info_wanted &
2122 SMB_SUPPORTED_SECINFO_FLAGS,
2123 max_data_count,
2124 &marshalled_sd,
2125 &sd_size);
2126
2127 if (NT_STATUS_EQUAL(status, NT_STATUS_BUFFER_TOO_SMALL)) {
2128 SIVAL(params,0,(uint32_t)sd_size);
2129 send_nt_replies(conn, req, NT_STATUS_BUFFER_TOO_SMALL,
2130 params, 4, NULL, 0);
2131 return;
2132 }
2133
2134 if (!NT_STATUS_IS_OK(status)) {
2135 reply_nterror(req, status);
2136 return;
2137 }
2138
2139 SMB_ASSERT(sd_size > 0);
2140
2141 SIVAL(params,0,(uint32_t)sd_size);
2142
2143 if (max_data_count < sd_size) {
2144 send_nt_replies(conn, req, NT_STATUS_BUFFER_TOO_SMALL,
2145 params, 4, NULL, 0);
2146 return;
2147 }
2148
2149 /*
2150 * Allocate the data we will return.
2151 */
2152
2153 data = nttrans_realloc(ppdata, sd_size);
2154 if(data == NULL) {
2155 reply_nterror(req, NT_STATUS_NO_MEMORY);
2156 return;
2157 }
2158
2159 memcpy(data, marshalled_sd, sd_size);
2160
2161 send_nt_replies(conn, req, NT_STATUS_OK, params, 4, data, (int)sd_size);
2162
2163 return;
2164 }
2165
2166 /****************************************************************************
2167 Reply to set a security descriptor. Map to UNIX perms or POSIX ACLs.
2168 ****************************************************************************/
2169
2170 static void call_nt_transact_set_security_desc(connection_struct *conn,
2171 struct smb_request *req,
2172 uint16_t **ppsetup,
2173 uint32_t setup_count,
2174 char **ppparams,
2175 uint32_t parameter_count,
2176 char **ppdata,
2177 uint32_t data_count,
2178 uint32_t max_data_count)
2179 {
2180 char *params= *ppparams;
2181 char *data = *ppdata;
2182 files_struct *fsp = NULL;
2183 uint32_t security_info_sent = 0;
2184 NTSTATUS status;
2185
2186 if(parameter_count < 8) {
2187 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2188 return;
2189 }
2190
2191 if((fsp = file_fsp(req, SVAL(params,0))) == NULL) {
2192 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
2193 return;
2194 }
2195
2196 if (!CAN_WRITE(fsp->conn)) {
2197 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
2198 return;
2199 }
2200
2201 if(!lp_nt_acl_support(SNUM(conn))) {
2202 goto done;
2203 }
2204
2205 security_info_sent = IVAL(params,4);
2206
2207 DEBUG(3,("call_nt_transact_set_security_desc: file = %s, sent 0x%x\n",
2208 fsp_str_dbg(fsp), (unsigned int)security_info_sent));
2209
2210 if (data_count == 0) {
2211 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2212 return;
2213 }
2214
2215 status = set_sd_blob(fsp, (uint8_t *)data, data_count,
2216 security_info_sent & SMB_SUPPORTED_SECINFO_FLAGS);
2217 if (!NT_STATUS_IS_OK(status)) {
2218 reply_nterror(req, status);
2219 return;
2220 }
2221
2222 done:
2223 send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, NULL, 0);
2224 return;
2225 }
2226
2227 /****************************************************************************
2228 Reply to NT IOCTL
2229 ****************************************************************************/
2230
2231 static void call_nt_transact_ioctl(connection_struct *conn,
2232 struct smb_request *req,
2233 uint16_t **ppsetup, uint32_t setup_count,
2234 char **ppparams, uint32_t parameter_count,
2235 char **ppdata, uint32_t data_count,
2236 uint32_t max_data_count)
2237 {
2238 NTSTATUS status;
2239 uint32_t function;
2240 uint16_t fidnum;
2241 files_struct *fsp;
2242 uint8_t isFSctl;
2243 uint8_t compfilter;
2244 char *out_data = NULL;
2245 uint32_t out_data_len = 0;
2246 char *pdata = *ppdata;
2247 TALLOC_CTX *ctx = talloc_tos();
2248
2249 if (setup_count != 8) {
2250 DEBUG(3,("call_nt_transact_ioctl: invalid setup count %d\n", setup_count));
2251 reply_nterror(req, NT_STATUS_NOT_SUPPORTED);
2252 return;
2253 }
2254
2255 function = IVAL(*ppsetup, 0);
2256 fidnum = SVAL(*ppsetup, 4);
2257 isFSctl = CVAL(*ppsetup, 6);
2258 compfilter = CVAL(*ppsetup, 7);
2259
2260 DEBUG(10, ("call_nt_transact_ioctl: function[0x%08X] FID[0x%04X] isFSctl[0x%02X] compfilter[0x%02X]\n",
2261 function, fidnum, isFSctl, compfilter));
2262
2263 fsp=file_fsp(req, fidnum);
2264
2265 /*
2266 * We don't really implement IOCTLs, especially on files.
2267 */
2268 if (!isFSctl) {
2269 DEBUG(10, ("isFSctl: 0x%02X indicates IOCTL, not FSCTL!\n",
2270 isFSctl));
2271 reply_nterror(req, NT_STATUS_NOT_SUPPORTED);
2272 return;
2273 }
2274
2275 /* Has to be for an open file! */
2276 if (!check_fsp_open(conn, req, fsp)) {
2277 return;
2278 }
2279
2280 SMB_PERFCOUNT_SET_IOCTL(&req->pcd, function);
2281
2282 /*
2283 * out_data might be allocated by the VFS module, but talloc should be
2284 * used, and should be cleaned up when the request ends.
2285 */
2286 status = SMB_VFS_FSCTL(fsp,
2287 ctx,
2288 function,
2289 req->flags2,
2290 (uint8_t *)pdata,
2291 data_count,
2292 (uint8_t **)&out_data,
2293 max_data_count,
2294 &out_data_len);
2295 if (!NT_STATUS_IS_OK(status)) {
2296 reply_nterror(req, status);
2297 } else {
2298 send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, out_data, out_data_len);
2299 }
2300 }
2301
2302
2303 #ifdef HAVE_SYS_QUOTAS
2304 static enum ndr_err_code fill_qtlist_from_sids(TALLOC_CTX *mem_ctx,
2305 struct files_struct *fsp,
2306 SMB_NTQUOTA_HANDLE *qt_handle,
2307 struct dom_sid *sids,
2308 uint32_t elems)
2309 {
2310 uint32_t i;
2311 TALLOC_CTX *list_ctx = NULL;
2312
2313 list_ctx = talloc_init("quota_sid_list");
2314
2315 if (list_ctx == NULL) {
2316 DBG_ERR("failed to allocate\n");
2317 return NDR_ERR_ALLOC;
2318 }
2319
2320 if (qt_handle->quota_list!=NULL) {
2321 free_ntquota_list(&(qt_handle->quota_list));
2322 }
2323 for (i = 0; i < elems; i++) {
2324 SMB_NTQUOTA_STRUCT qt;
2325 SMB_NTQUOTA_LIST *list_item;
2326 bool ok;
2327
2328 if (!NT_STATUS_IS_OK(vfs_get_ntquota(fsp,
2329 SMB_USER_QUOTA_TYPE,
2330 &sids[i], &qt))) {
2331 /* non fatal error, return empty item in result */
2332 ZERO_STRUCT(qt);
2333 continue;
2334 }
2335
2336
2337 list_item = talloc_zero(list_ctx, SMB_NTQUOTA_LIST);
2338 if (list_item == NULL) {
2339 DBG_ERR("failed to allocate\n");
2340 return NDR_ERR_ALLOC;
2341 }
2342
2343 ok = sid_to_uid(&sids[i], &list_item->uid);
2344 if (!ok) {
2345 struct dom_sid_buf buf;
2346 DBG_WARNING("Could not convert SID %s to uid\n",
2347 dom_sid_str_buf(&sids[i], &buf));
2348 /* No idea what to return here... */
2349 return NDR_ERR_INVALID_POINTER;
2350 }
2351
2352 list_item->quotas = talloc_zero(list_item, SMB_NTQUOTA_STRUCT);
2353 if (list_item->quotas == NULL) {
2354 DBG_ERR("failed to allocate\n");
2355 return NDR_ERR_ALLOC;
2356 }
2357
2358 *list_item->quotas = qt;
2359 list_item->mem_ctx = list_ctx;
2360 DLIST_ADD(qt_handle->quota_list, list_item);
2361 }
2362 qt_handle->tmp_list = qt_handle->quota_list;
2363 return NDR_ERR_SUCCESS;
2364 }
2365
2366 static enum ndr_err_code extract_sids_from_buf(TALLOC_CTX *mem_ctx,
2367 uint32_t sidlistlength,
2368 DATA_BLOB *sid_buf,
2369 struct dom_sid **sids,
2370 uint32_t *num)
2371 {
2372 DATA_BLOB blob;
2373 uint32_t i = 0;
2374 enum ndr_err_code err;
2375
2376 struct sid_list_elem {
2377 struct sid_list_elem *prev, *next;
2378 struct dom_sid sid;
2379 };
2380
2381 struct sid_list_elem *sid_list = NULL;
2382 struct sid_list_elem *iter = NULL;
2383 TALLOC_CTX *list_ctx = talloc_init("sid_list");
2384 if (!list_ctx) {
2385 DBG_ERR("OOM\n");
2386 err = NDR_ERR_ALLOC;
2387 goto done;
2388 }
2389
2390 *num = 0;
2391 *sids = NULL;
2392
2393 if (sidlistlength) {
2394 uint32_t offset = 0;
2395 struct ndr_pull *ndr_pull = NULL;
2396
2397 if (sidlistlength > sid_buf->length) {
2398 DBG_ERR("sid_list_length 0x%x exceeds "
2399 "available bytes %zx\n",
2400 sidlistlength,
2401 sid_buf->length);
2402 err = NDR_ERR_OFFSET;
2403 goto done;
2404 }
2405 while (true) {
2406 struct file_get_quota_info info;
2407 struct sid_list_elem *item = NULL;
2408 uint32_t new_offset = 0;
2409 blob.data = sid_buf->data + offset;
2410 blob.length = sidlistlength - offset;
2411 ndr_pull = ndr_pull_init_blob(&blob, list_ctx);
2412 if (!ndr_pull) {
2413 DBG_ERR("OOM\n");
2414 err = NDR_ERR_ALLOC;
2415 goto done;
2416 }
2417 err = ndr_pull_file_get_quota_info(ndr_pull,
2418 NDR_SCALARS | NDR_BUFFERS, &info);
2419 if (!NDR_ERR_CODE_IS_SUCCESS(err)) {
2420 DBG_ERR("Failed to pull file_get_quota_info "
2421 "from sidlist buffer\n");
2422 goto done;
2423 }
2424 item = talloc_zero(list_ctx, struct sid_list_elem);
2425 if (!item) {
2426 DBG_ERR("OOM\n");
2427 err = NDR_ERR_ALLOC;
2428 goto done;
2429 }
2430 item->sid = info.sid;
2431 DLIST_ADD(sid_list, item);
2432 i++;
2433 if (i == UINT32_MAX) {
2434 DBG_ERR("Integer overflow\n");
2435 err = NDR_ERR_ARRAY_SIZE;
2436 goto done;
2437 }
2438 new_offset = info.next_entry_offset;
2439
2440 /* if new_offset == 0 no more sid(s) to read. */
2441 if (new_offset == 0) {
2442 break;
2443 }
2444
2445 /* Integer wrap? */
2446 if ((offset + new_offset) < offset) {
2447 DBG_ERR("Integer wrap while adding "
2448 "new_offset 0x%x to current "
2449 "buffer offset 0x%x\n",
2450 new_offset, offset);
2451 err = NDR_ERR_OFFSET;
2452 goto done;
2453 }
2454
2455 offset += new_offset;
2456
2457 /* check if new offset is outside buffer boundry. */
2458 if (offset >= sidlistlength) {
2459 DBG_ERR("bufsize 0x%x exceeded by "
2460 "new offset 0x%x)\n",
2461 sidlistlength,
2462 offset);
2463 err = NDR_ERR_OFFSET;
2464 goto done;
2465 }
2466 }
2467 *sids = talloc_zero_array(mem_ctx, struct dom_sid, i);
2468 if (*sids == NULL) {
2469 DBG_ERR("OOM\n");
2470 err = NDR_ERR_ALLOC;
2471 goto done;
2472 }
2473
2474 *num = i;
2475
2476 for (iter = sid_list, i = 0; iter; iter = iter->next, i++) {
2477 struct dom_sid_buf buf;
2478 (*sids)[i] = iter->sid;
2479 DBG_DEBUG("quota SID[%u] %s\n",
2480 (unsigned int)i,
2481 dom_sid_str_buf(&iter->sid, &buf));
2482 }
2483 }
2484 err = NDR_ERR_SUCCESS;
2485 done:
2486 TALLOC_FREE(list_ctx);
2487 return err;
2488 }
2489
2490 NTSTATUS smbd_do_query_getinfo_quota(TALLOC_CTX *mem_ctx,
2491 files_struct *fsp,
2492 bool restart_scan,
2493 bool return_single,
2494 uint32_t sid_list_length,
2495 DATA_BLOB *sid_buf,
2496 uint32_t max_data_count,
2497 uint8_t **p_data,
2498 uint32_t *p_data_size)
2499 {
2500 NTSTATUS status;
2501 SMB_NTQUOTA_HANDLE *qt_handle = NULL;
2502 SMB_NTQUOTA_LIST *qt_list = NULL;
2503 DATA_BLOB blob = data_blob_null;
2504 enum ndr_err_code err;
2505
2506 qt_handle =
2507 (SMB_NTQUOTA_HANDLE *)fsp->fake_file_handle->private_data;
2508
2509 if (sid_list_length ) {
2510 struct dom_sid *sids;
2511 uint32_t elems = 0;
2512 /*
2513 * error check pulled offsets and lengths for wrap and
2514 * exceeding available bytes.
2515 */
2516 if (sid_list_length > sid_buf->length) {
2517 DBG_ERR("sid_list_length 0x%x exceeds "
2518 "available bytes %zx\n",
2519 sid_list_length,
2520 sid_buf->length);
2521 return NT_STATUS_INVALID_PARAMETER;
2522 }
2523
2524 err = extract_sids_from_buf(mem_ctx, sid_list_length,
2525 sid_buf, &sids, &elems);
2526 if (!NDR_ERR_CODE_IS_SUCCESS(err) || elems == 0) {
2527 return NT_STATUS_INVALID_PARAMETER;
2528 }
2529 err = fill_qtlist_from_sids(mem_ctx,
2530 fsp,
2531 qt_handle,
2532 sids,
2533 elems);
2534 if (!NDR_ERR_CODE_IS_SUCCESS(err)) {
2535 return NT_STATUS_INVALID_PARAMETER;
2536 }
2537 } else if (restart_scan) {
2538 if (vfs_get_user_ntquota_list(fsp,
2539 &(qt_handle->quota_list))!=0) {
2540 return NT_STATUS_INTERNAL_ERROR;
2541 }
2542 } else {
2543 if (qt_handle->quota_list!=NULL &&
2544 qt_handle->tmp_list==NULL) {
2545 free_ntquota_list(&(qt_handle->quota_list));
2546 }
2547 }
2548
2549 if (restart_scan !=0 ) {
2550 qt_list = qt_handle->quota_list;
2551 } else {
2552 qt_list = qt_handle->tmp_list;
2553 }
2554 status = fill_quota_buffer(mem_ctx, qt_list,
2555 return_single != 0,
2556 max_data_count,
2557 &blob,
2558 &qt_handle->tmp_list);
2559 if (!NT_STATUS_IS_OK(status)) {
2560 return status;
2561 }
2562 if (blob.length > max_data_count) {
2563 return NT_STATUS_BUFFER_TOO_SMALL;
2564 }
2565
2566 *p_data = blob.data;
2567 *p_data_size = blob.length;
2568 return NT_STATUS_OK;
2569 }
2570
2571 /****************************************************************************
2572 Reply to get user quota
2573 ****************************************************************************/
2574
2575 static void call_nt_transact_get_user_quota(connection_struct *conn,
2576 struct smb_request *req,
2577 uint16_t **ppsetup,
2578 uint32_t setup_count,
2579 char **ppparams,
2580 uint32_t parameter_count,
2581 char **ppdata,
2582 uint32_t data_count,
2583 uint32_t max_data_count)
2584 {
2585 NTSTATUS nt_status = NT_STATUS_OK;
2586 char *params = *ppparams;
2587 char *pdata = *ppdata;
2588 int data_len = 0;
2589 int param_len = 0;
2590 files_struct *fsp = NULL;
2591 DATA_BLOB blob = data_blob_null;
2592 struct nttrans_query_quota_params info = {0};
2593 enum ndr_err_code err;
2594 TALLOC_CTX *tmp_ctx = NULL;
2595 uint32_t resp_len = 0;
2596 uint8_t *resp_data = 0;
2597
2598 tmp_ctx = talloc_init("ntquota_list");
2599 if (!tmp_ctx) {
2600 nt_status = NT_STATUS_NO_MEMORY;
2601 goto error;
2602 }
2603
2604 /* access check */
2605 if (get_current_uid(conn) != sec_initial_uid()) {
2606 DEBUG(1,("get_user_quota: access_denied service [%s] user "
2607 "[%s]\n", lp_servicename(talloc_tos(), SNUM(conn)),
2608 conn->session_info->unix_info->unix_name));
2609 nt_status = NT_STATUS_ACCESS_DENIED;
2610 goto error;
2611 }
2612
2613 blob.data = (uint8_t*)params;
2614 blob.length = parameter_count;
2615
2616 err = ndr_pull_struct_blob(&blob, tmp_ctx, &info,
2617 (ndr_pull_flags_fn_t)ndr_pull_nttrans_query_quota_params);
2618
2619 if (!NDR_ERR_CODE_IS_SUCCESS(err)) {
2620 DEBUG(0,("TRANSACT_GET_USER_QUOTA: failed to pull "
2621 "query_quota_params."));
2622 nt_status = NT_STATUS_INVALID_PARAMETER;
2623 goto error;
2624 }
2625 DBG_DEBUG("info.return_single_entry = %u, info.restart_scan = %u, "
2626 "info.sid_list_length = %u, info.start_sid_length = %u, "
2627 "info.start_sid_offset = %u\n",
2628 (unsigned int)info.return_single_entry,
2629 (unsigned int)info.restart_scan,
2630 (unsigned int)info.sid_list_length,
2631 (unsigned int)info.start_sid_length,
2632 (unsigned int)info.start_sid_offset);
2633
2634 /* set blob to point at data for further parsing */
2635 blob.data = (uint8_t*)pdata;
2636 blob.length = data_count;
2637 /*
2638 * Although MS-SMB ref is ambiguous here, a microsoft client will
2639 * only ever send a start sid (as part of a list) with
2640 * sid_list_length & start_sid_offset both set to the actual list
2641 * length. Note: Only a single result is returned in this case
2642 * In the case where either start_sid_offset or start_sid_length
2643 * are set alone or if both set (but have different values) then
2644 * it seems windows will return a number of entries from the start
2645 * of the list of users with quotas set. This behaviour is undocumented
2646 * and windows clients do not send messages of that type. As such we
2647 * currently will reject these requests.
2648 */
2649 if (info.start_sid_length
2650 || (info.sid_list_length != info.start_sid_offset)) {
2651 DBG_ERR("TRANSACT_GET_USER_QUOTA: unsupported single or "
2652 "compound sid format\n");
2653 nt_status = NT_STATUS_INVALID_PARAMETER;
2654 goto error;
2655 }
2656
2657 /* maybe we can check the quota_fnum */
2658 fsp = file_fsp(req, info.fid);
2659 if (!check_fsp_ntquota_handle(conn, req, fsp)) {
2660 DEBUG(3,("TRANSACT_GET_USER_QUOTA: no valid QUOTA HANDLE\n"));
2661 nt_status = NT_STATUS_INVALID_HANDLE;
2662 goto error;
2663 }
2664 nt_status = smbd_do_query_getinfo_quota(tmp_ctx,
2665 fsp,
2666 info.restart_scan,
2667 info.return_single_entry,
2668 info.sid_list_length,
2669 &blob,
2670 max_data_count,
2671 &resp_data,
2672 &resp_len);
2673 if (!NT_STATUS_IS_OK(nt_status)) {
2674 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MORE_ENTRIES)) {
2675 goto error;
2676 }
2677 nt_status = NT_STATUS_OK;
2678 }
2679
2680 param_len = 4;
2681 params = nttrans_realloc(ppparams, param_len);
2682 if(params == NULL) {
2683 nt_status = NT_STATUS_NO_MEMORY;
2684 goto error;
2685 }
2686
2687 data_len = resp_len;
2688 SIVAL(params, 0, data_len);
2689 pdata = nttrans_realloc(ppdata, data_len);
2690 memcpy(pdata, resp_data, data_len);
2691
2692 TALLOC_FREE(tmp_ctx);
2693 send_nt_replies(conn, req, nt_status, params, param_len,
2694 pdata, data_len);
2695 return;
2696 error:
2697 TALLOC_FREE(tmp_ctx);
2698 reply_nterror(req, nt_status);
2699 }
2700
2701 /****************************************************************************
2702 Reply to set user quota
2703 ****************************************************************************/
2704
2705 static void call_nt_transact_set_user_quota(connection_struct *conn,
2706 struct smb_request *req,
2707 uint16_t **ppsetup,
2708 uint32_t setup_count,
2709 char **ppparams,
2710 uint32_t parameter_count,
2711 char **ppdata,
2712 uint32_t data_count,
2713 uint32_t max_data_count)
2714 {
2715 char *params = *ppparams;
2716 char *pdata = *ppdata;
2717 int data_len=0,param_len=0;
2718 SMB_NTQUOTA_STRUCT qt;
2719 struct file_quota_information info = {0};
2720 enum ndr_err_code err;
2721 struct dom_sid sid;
2722 DATA_BLOB inblob;
2723 files_struct *fsp = NULL;
2724 TALLOC_CTX *ctx = NULL;
2725 NTSTATUS status = NT_STATUS_OK;
2726 ZERO_STRUCT(qt);
2727
2728 /* access check */
2729 if (get_current_uid(conn) != sec_initial_uid()) {
2730 DEBUG(1,("set_user_quota: access_denied service [%s] user "
2731 "[%s]\n", lp_servicename(talloc_tos(), SNUM(conn)),
2732 conn->session_info->unix_info->unix_name));
2733 status = NT_STATUS_ACCESS_DENIED;
2734 goto error;
2735 }
2736
2737 /*
2738 * Ensure minimum number of parameters sent.
2739 */
2740
2741 if (parameter_count < 2) {
2742 DEBUG(0,("TRANSACT_SET_USER_QUOTA: requires %d >= 2 bytes parameters\n",parameter_count));
2743 status = NT_STATUS_INVALID_PARAMETER;
2744 goto error;
2745 }
2746
2747 /* maybe we can check the quota_fnum */
2748 fsp = file_fsp(req, SVAL(params,0));
2749 if (!check_fsp_ntquota_handle(conn, req, fsp)) {
2750 DEBUG(3,("TRANSACT_GET_USER_QUOTA: no valid QUOTA HANDLE\n"));
2751 status = NT_STATUS_INVALID_HANDLE;
2752 goto error;
2753 }
2754
2755 ctx = talloc_init("set_user_quota");
2756 if (!ctx) {
2757 status = NT_STATUS_NO_MEMORY;
2758 goto error;
2759 }
2760 inblob.data = (uint8_t*)pdata;
2761 inblob.length = data_count;
2762
2763 err = ndr_pull_struct_blob(
2764 &inblob,
2765 ctx,
2766 &info,
2767 (ndr_pull_flags_fn_t)ndr_pull_file_quota_information);
2768
2769 if (!NDR_ERR_CODE_IS_SUCCESS(err)) {
2770 DEBUG(0,("TRANSACT_SET_USER_QUOTA: failed to pull "
2771 "file_quota_information\n"));
2772 status = NT_STATUS_INVALID_PARAMETER;
2773 goto error;
2774 }
2775 qt.usedspace = info.quota_used;
2776
2777 qt.softlim = info.quota_threshold;
2778
2779 qt.hardlim = info.quota_limit;
2780
2781 sid = info.sid;
2782
2783 if (vfs_set_ntquota(fsp, SMB_USER_QUOTA_TYPE, &sid, &qt)!=0) {
2784 status = NT_STATUS_INTERNAL_ERROR;
2785 goto error;
2786 }
2787
2788 send_nt_replies(conn, req, NT_STATUS_OK, params, param_len,
2789 pdata, data_len);
2790 TALLOC_FREE(ctx);
2791 return;
2792 error:
2793 TALLOC_FREE(ctx);
2794 reply_nterror(req, status);
2795 }
2796 #endif /* HAVE_SYS_QUOTAS */
2797
2798 static void handle_nttrans(connection_struct *conn,
2799 struct trans_state *state,
2800 struct smb_request *req)
2801 {
2802 if (get_Protocol() >= PROTOCOL_NT1) {
2803 req->flags2 |= 0x40; /* IS_LONG_NAME */
2804 SSVAL(discard_const_p(uint8_t, req->inbuf),smb_flg2,req->flags2);
2805 }
2806
2807
2808 SMB_PERFCOUNT_SET_SUBOP(&req->pcd, state->call);
2809
2810 /* Now we must call the relevant NT_TRANS function */
2811 switch(state->call) {
2812 case NT_TRANSACT_CREATE:
2813 {
2814 START_PROFILE(NT_transact_create);
2815 call_nt_transact_create(
2816 conn, req,
2817 &state->setup, state->setup_count,
2818 &state->param, state->total_param,
2819 &state->data, state->total_data,
2820 state->max_data_return);
2821 END_PROFILE(NT_transact_create);
2822 break;
2823 }
2824
2825 case NT_TRANSACT_IOCTL:
2826 {
2827 START_PROFILE(NT_transact_ioctl);
2828 call_nt_transact_ioctl(
2829 conn, req,
2830 &state->setup, state->setup_count,
2831 &state->param, state->total_param,
2832 &state->data, state->total_data,
2833 state->max_data_return);
2834 END_PROFILE(NT_transact_ioctl);
2835 break;
2836 }
2837
2838 case NT_TRANSACT_SET_SECURITY_DESC:
2839 {
2840 START_PROFILE(NT_transact_set_security_desc);
2841 call_nt_transact_set_security_desc(
2842 conn, req,
2843 &state->setup, state->setup_count,
2844 &state->param, state->total_param,
2845 &state->data, state->total_data,
2846 state->max_data_return);
2847 END_PROFILE(NT_transact_set_security_desc);
2848 break;
2849 }
2850
2851 case NT_TRANSACT_NOTIFY_CHANGE:
2852 {
2853 START_PROFILE(NT_transact_notify_change);
2854 call_nt_transact_notify_change(
2855 conn, req,
2856 &state->setup, state->setup_count,
2857 &state->param, state->total_param,
2858 &state->data, state->total_data,
2859 state->max_data_return,
2860 state->max_param_return);
2861 END_PROFILE(NT_transact_notify_change);
2862 break;
2863 }
2864
2865 case NT_TRANSACT_RENAME:
2866 {
2867 START_PROFILE(NT_transact_rename);
2868 call_nt_transact_rename(
2869 conn, req,
2870 &state->setup, state->setup_count,
2871 &state->param, state->total_param,
2872 &state->data, state->total_data,
2873 state->max_data_return);
2874 END_PROFILE(NT_transact_rename);
2875 break;
2876 }
2877
2878 case NT_TRANSACT_QUERY_SECURITY_DESC:
2879 {
2880 START_PROFILE(NT_transact_query_security_desc);
2881 call_nt_transact_query_security_desc(
2882 conn, req,
2883 &state->setup, state->setup_count,
2884 &state->param, state->total_param,
2885 &state->data, state->total_data,
2886 state->max_data_return);
2887 END_PROFILE(NT_transact_query_security_desc);
2888 break;
2889 }
2890
2891 #ifdef HAVE_SYS_QUOTAS
2892 case NT_TRANSACT_GET_USER_QUOTA:
2893 {
2894 START_PROFILE(NT_transact_get_user_quota);
2895 call_nt_transact_get_user_quota(
2896 conn, req,
2897 &state->setup, state->setup_count,
2898 &state->param, state->total_param,
2899 &state->data, state->total_data,
2900 state->max_data_return);
2901 END_PROFILE(NT_transact_get_user_quota);
2902 break;
2903 }
2904
2905 case NT_TRANSACT_SET_USER_QUOTA:
2906 {
2907 START_PROFILE(NT_transact_set_user_quota);
2908 call_nt_transact_set_user_quota(
2909 conn, req,
2910 &state->setup, state->setup_count,
2911 &state->param, state->total_param,
2912 &state->data, state->total_data,
2913 state->max_data_return);
2914 END_PROFILE(NT_transact_set_user_quota);
2915 break;
2916 }
2917 #endif /* HAVE_SYS_QUOTAS */
2918
2919 default:
2920 /* Error in request */
2921 DEBUG(0,("handle_nttrans: Unknown request %d in "
2922 "nttrans call\n", state->call));
2923 reply_nterror(req, NT_STATUS_INVALID_LEVEL);
2924 return;
2925 }
2926 return;
2927 }
2928
2929 /****************************************************************************
2930 Reply to a SMBNTtrans.
2931 ****************************************************************************/
2932
2933 void reply_nttrans(struct smb_request *req)
2934 {
2935 connection_struct *conn = req->conn;
2936 uint32_t pscnt;
2937 uint32_t psoff;
2938 uint32_t dscnt;
2939 uint32_t dsoff;
2940 uint16_t function_code;
2941 NTSTATUS result;
2942 struct trans_state *state;
2943
2944 START_PROFILE(SMBnttrans);
2945
2946 if (req->wct < 19) {
2947 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2948 END_PROFILE(SMBnttrans);
2949 return;
2950 }
2951
2952 pscnt = IVAL(req->vwv+9, 1);
2953 psoff = IVAL(req->vwv+11, 1);
2954 dscnt = IVAL(req->vwv+13, 1);
2955 dsoff = IVAL(req->vwv+15, 1);
2956 function_code = SVAL(req->vwv+18, 0);
2957
2958 if (IS_IPC(conn) && (function_code != NT_TRANSACT_CREATE)) {
2959 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
2960 END_PROFILE(SMBnttrans);
2961 return;
2962 }
2963
2964 result = allow_new_trans(conn->pending_trans, req->mid);
2965 if (!NT_STATUS_IS_OK(result)) {
2966 DEBUG(2, ("Got invalid nttrans request: %s\n", nt_errstr(result)));
2967 reply_nterror(req, result);
2968 END_PROFILE(SMBnttrans);
2969 return;
2970 }
2971
2972 if ((state = talloc(conn, struct trans_state)) == NULL) {
2973 reply_nterror(req, NT_STATUS_NO_MEMORY);
2974 END_PROFILE(SMBnttrans);
2975 return;
2976 }
2977
2978 state->cmd = SMBnttrans;
2979
2980 state->mid = req->mid;
2981 state->vuid = req->vuid;
2982 state->total_data = IVAL(req->vwv+3, 1);
2983 state->data = NULL;
2984 state->total_param = IVAL(req->vwv+1, 1);
2985 state->param = NULL;
2986 state->max_data_return = IVAL(req->vwv+7, 1);
2987 state->max_param_return = IVAL(req->vwv+5, 1);
2988
2989 /* setup count is in *words* */
2990 state->setup_count = 2*CVAL(req->vwv+17, 1);
2991 state->setup = NULL;
2992 state->call = function_code;
2993
2994 DEBUG(10, ("num_setup=%u, "
2995 "param_total=%u, this_param=%u, max_param=%u, "
2996 "data_total=%u, this_data=%u, max_data=%u, "
2997 "param_offset=%u, data_offset=%u\n",
2998 (unsigned)state->setup_count,
2999 (unsigned)state->total_param, (unsigned)pscnt,
3000 (unsigned)state->max_param_return,
3001 (unsigned)state->total_data, (unsigned)dscnt,
3002 (unsigned)state->max_data_return,
3003 (unsigned)psoff, (unsigned)dsoff));
3004
3005 /*
3006 * All nttrans messages we handle have smb_wct == 19 +
3007 * state->setup_count. Ensure this is so as a sanity check.
3008 */
3009
3010 if(req->wct != 19 + (state->setup_count/2)) {
3011 DEBUG(2,("Invalid smb_wct %d in nttrans call (should be %d)\n",
3012 req->wct, 19 + (state->setup_count/2)));
3013 goto bad_param;
3014 }
3015
3016 /* Don't allow more than 128mb for each value. */
3017 if ((state->total_data > (1024*1024*128)) ||
3018 (state->total_param > (1024*1024*128))) {
3019 reply_nterror(req, NT_STATUS_NO_MEMORY);
3020 END_PROFILE(SMBnttrans);
3021 return;
3022 }
3023
3024 if ((dscnt > state->total_data) || (pscnt > state->total_param))
3025 goto bad_param;
3026
3027 if (state->total_data) {
3028
3029 if (trans_oob(state->total_data, 0, dscnt)
3030 || trans_oob(smb_len(req->inbuf), dsoff, dscnt)) {
3031 goto bad_param;
3032 }
3033
3034 /* Can't use talloc here, the core routines do realloc on the
3035 * params and data. */
3036 if ((state->data = (char *)SMB_MALLOC(state->total_data)) == NULL) {
3037 DEBUG(0,("reply_nttrans: data malloc fail for %u "
3038 "bytes !\n", (unsigned int)state->total_data));
3039 TALLOC_FREE(state);
3040 reply_nterror(req, NT_STATUS_NO_MEMORY);
3041 END_PROFILE(SMBnttrans);
3042 return;
3043 }
3044
3045 memcpy(state->data,smb_base(req->inbuf)+dsoff,dscnt);
3046 }
3047
3048 if (state->total_param) {
3049
3050 if (trans_oob(state->total_param, 0, pscnt)
3051 || trans_oob(smb_len(req->inbuf), psoff, pscnt)) {
3052 goto bad_param;
3053 }
3054
3055 /* Can't use talloc here, the core routines do realloc on the
3056 * params and data. */
3057 if ((state->param = (char *)SMB_MALLOC(state->total_param)) == NULL) {
3058 DEBUG(0,("reply_nttrans: param malloc fail for %u "
3059 "bytes !\n", (unsigned int)state->total_param));
3060 SAFE_FREE(state->data);
3061 TALLOC_FREE(state);
3062 reply_nterror(req, NT_STATUS_NO_MEMORY);
3063 END_PROFILE(SMBnttrans);
3064 return;
3065 }
3066
3067 memcpy(state->param,smb_base(req->inbuf)+psoff,pscnt);
3068 }
3069
3070 state->received_data = dscnt;
3071 state->received_param = pscnt;
3072
3073 if(state->setup_count > 0) {
3074 DEBUG(10,("reply_nttrans: state->setup_count = %d\n",
3075 state->setup_count));
3076
3077 /*
3078 * No overflow possible here, state->setup_count is an
3079 * unsigned int, being filled by a single byte from
3080 * CVAL(req->vwv+13, 0) above. The cast in the comparison
3081 * below is not necessary, it's here to clarify things. The
3082 * validity of req->vwv and req->wct has been checked in
3083 * init_smb_request already.
3084 */
3085 if ((state->setup_count/2) + 19 > (unsigned int)req->wct) {
3086 goto bad_param;
3087 }
3088
3089 state->setup = (uint16_t *)TALLOC(state, state->setup_count);
3090 if (state->setup == NULL) {
3091 DEBUG(0,("reply_nttrans : Out of memory\n"));
3092 SAFE_FREE(state->data);
3093 SAFE_FREE(state->param);
3094 TALLOC_FREE(state);
3095 reply_nterror(req, NT_STATUS_NO_MEMORY);
3096 END_PROFILE(SMBnttrans);
3097 return;
3098 }
3099
3100 memcpy(state->setup, req->vwv+19, state->setup_count);
3101 dump_data(10, (uint8_t *)state->setup, state->setup_count);
3102 }
3103
3104 if ((state->received_data == state->total_data) &&
3105 (state->received_param == state->total_param)) {
3106 handle_nttrans(conn, state, req);
3107 SAFE_FREE(state->param);
3108 SAFE_FREE(state->data);
3109 TALLOC_FREE(state);
3110 END_PROFILE(SMBnttrans);
3111 return;
3112 }
3113
3114 DLIST_ADD(conn->pending_trans, state);
3115
3116 /* We need to send an interim response then receive the rest
3117 of the parameter/data bytes */
3118 reply_outbuf(req, 0, 0);
3119 show_msg((char *)req->outbuf);
3120 END_PROFILE(SMBnttrans);
3121 return;
3122
3123 bad_param:
3124
3125 DEBUG(0,("reply_nttrans: invalid trans parameters\n"));
3126 SAFE_FREE(state->data);
3127 SAFE_FREE(state->param);
3128 TALLOC_FREE(state);
3129 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
3130 END_PROFILE(SMBnttrans);
3131 return;
3132 }
3133
3134 /****************************************************************************
3135 Reply to a SMBnttranss
3136 ****************************************************************************/
3137
3138 void reply_nttranss(struct smb_request *req)
3139 {
3140 connection_struct *conn = req->conn;
3141 uint32_t pcnt,poff,dcnt,doff,pdisp,ddisp;
3142 struct trans_state *state;
3143
3144 START_PROFILE(SMBnttranss);
3145
3146 show_msg((const char *)req->inbuf);
3147
3148 /* Windows clients expect all replies to
3149 an NT transact secondary (SMBnttranss 0xA1)
3150 to have a command code of NT transact
3151 (SMBnttrans 0xA0). See bug #8989 for details. */
3152 req->cmd = SMBnttrans;
3153
3154 if (req->wct < 18) {
3155 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
3156 END_PROFILE(SMBnttranss);
3157 return;
3158 }
3159
3160 for (state = conn->pending_trans; state != NULL;
3161 state = state->next) {
3162 if (state->mid == req->mid) {
3163 break;
3164 }
3165 }
3166
3167 if ((state == NULL) || (state->cmd != SMBnttrans)) {
3168 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
3169 END_PROFILE(SMBnttranss);
3170 return;
3171 }
3172
3173 /* Revise state->total_param and state->total_data in case they have
3174 changed downwards */
3175 if (IVAL(req->vwv+1, 1) < state->total_param) {
3176 state->total_param = IVAL(req->vwv+1, 1);
3177 }
3178 if (IVAL(req->vwv+3, 1) < state->total_data) {
3179 state->total_data = IVAL(req->vwv+3, 1);
3180 }
3181
3182 pcnt = IVAL(req->vwv+5, 1);
3183 poff = IVAL(req->vwv+7, 1);
3184 pdisp = IVAL(req->vwv+9, 1);
3185
3186 dcnt = IVAL(req->vwv+11, 1);
3187 doff = IVAL(req->vwv+13, 1);
3188 ddisp = IVAL(req->vwv+15, 1);
3189
3190 state->received_param += pcnt;
3191 state->received_data += dcnt;
3192
3193 if ((state->received_data > state->total_data) ||
3194 (state->received_param > state->total_param))
3195 goto bad_param;
3196
3197 if (pcnt) {
3198 if (trans_oob(state->total_param, pdisp, pcnt)
3199 || trans_oob(smb_len(req->inbuf), poff, pcnt)) {
3200 goto bad_param;
3201 }
3202 memcpy(state->param+pdisp, smb_base(req->inbuf)+poff,pcnt);
3203 }
3204
3205 if (dcnt) {
3206 if (trans_oob(state->total_data, ddisp, dcnt)
3207 || trans_oob(smb_len(req->inbuf), doff, dcnt)) {
3208 goto bad_param;
3209 }
3210 memcpy(state->data+ddisp, smb_base(req->inbuf)+doff,dcnt);
3211 }
3212
3213 if ((state->received_param < state->total_param) ||
3214 (state->received_data < state->total_data)) {
3215 END_PROFILE(SMBnttranss);
3216 return;
3217 }
3218
3219 handle_nttrans(conn, state, req);
3220
3221 DLIST_REMOVE(conn->pending_trans, state);
3222 SAFE_FREE(state->data);
3223 SAFE_FREE(state->param);
3224 TALLOC_FREE(state);
3225 END_PROFILE(SMBnttranss);
3226 return;
3227
3228 bad_param:
3229
3230 DEBUG(0,("reply_nttranss: invalid trans parameters\n"));
3231 DLIST_REMOVE(conn->pending_trans, state);
3232 SAFE_FREE(state->data);
3233 SAFE_FREE(state->param);
3234 TALLOC_FREE(state);
3235 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
3236 END_PROFILE(SMBnttranss);
3237 return;
3238 }
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