1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright 2017 Nexenta Systems, Inc. All rights reserved.
25 */
26
27 #include <smbsrv/smb_kproto.h>
28 #include <smbsrv/smb_vops.h>
29 #include <smbsrv/smb_fsops.h>
30
31 /*
32 * Trans2 Query File/Path Information Levels:
33 *
34 * SMB_INFO_STANDARD
35 * SMB_INFO_QUERY_EA_SIZE
36 * SMB_INFO_QUERY_EAS_FROM_LIST
37 * SMB_INFO_QUERY_ALL_EAS - not valid for pipes
38 * SMB_INFO_IS_NAME_VALID - only valid when query is by path
39 *
40 * SMB_QUERY_FILE_BASIC_INFO
41 * SMB_QUERY_FILE_STANDARD_INFO
42 * SMB_QUERY_FILE_EA_INFO
43 * SMB_QUERY_FILE_NAME_INFO
44 * SMB_QUERY_FILE_ALL_INFO
45 * SMB_QUERY_FILE_ALT_NAME_INFO - not valid for pipes
46 * SMB_QUERY_FILE_STREAM_INFO - not valid for pipes
47 * SMB_QUERY_FILE_COMPRESSION_INFO - not valid for pipes
48 *
49 * Supported Passthrough levels:
50 * SMB_FILE_BASIC_INFORMATION
51 * SMB_FILE_STANDARD_INFORMATION
52 * SMB_FILE_INTERNAL_INFORMATION
53 * SMB_FILE_EA_INFORMATION
54 * SMB_FILE_ACCESS_INFORMATION - not yet supported when query by path
55 * SMB_FILE_NAME_INFORMATION
56 * SMB_FILE_ALL_INFORMATION
57 * SMB_FILE_ALT_NAME_INFORMATION - not valid for pipes
58 * SMB_FILE_STREAM_INFORMATION - not valid for pipes
59 * SMB_FILE_COMPRESSION_INFORMATION - not valid for pipes
60 * SMB_FILE_NETWORK_OPEN_INFORMATION - not valid for pipes
61 * SMB_FILE_ATTR_TAG_INFORMATION - not valid for pipes
62 *
63 * Internal levels representing non trans2 requests
64 * SMB_QUERY_INFORMATION
65 * SMB_QUERY_INFORMATION2
66 */
67
68 /*
69 * SMB_STREAM_ENCODE_FIXED_SIZE:
70 * 2 dwords + 2 quadwords => 4 + 4 + 8 + 8 => 24
71 */
72 #define SMB_STREAM_ENCODE_FIXED_SZ 24
73
74 /* See smb_queryinfo_t in smb_ktypes.h */
75 #define qi_mtime qi_attr.sa_vattr.va_mtime
76 #define qi_ctime qi_attr.sa_vattr.va_ctime
77 #define qi_atime qi_attr.sa_vattr.va_atime
78 #define qi_crtime qi_attr.sa_crtime
79
80 static int smb_query_by_fid(smb_request_t *, smb_xa_t *, uint16_t);
81 static int smb_query_by_path(smb_request_t *, smb_xa_t *, uint16_t);
82
83 static int smb_query_fileinfo(smb_request_t *, smb_node_t *,
84 uint16_t, smb_queryinfo_t *);
85 static int smb_query_pipeinfo(smb_request_t *, smb_opipe_t *,
86 uint16_t, smb_queryinfo_t *);
87 static boolean_t smb_query_pipe_valid_infolev(smb_request_t *, uint16_t);
88
89 static int smb_query_encode_response(smb_request_t *, smb_xa_t *,
90 uint16_t, smb_queryinfo_t *);
91 static boolean_t smb_stream_fits(smb_request_t *, mbuf_chain_t *,
92 char *, uint32_t);
93 static int smb_query_pathname(smb_request_t *, smb_node_t *, boolean_t,
94 smb_queryinfo_t *);
95
96 int smb_query_passthru;
97
98 /*
99 * smb_com_trans2_query_file_information
100 */
101 smb_sdrc_t
102 smb_com_trans2_query_file_information(struct smb_request *sr, struct smb_xa *xa)
103 {
104 uint16_t infolev;
105
106 if (smb_mbc_decodef(&xa->req_param_mb, "ww",
107 &sr->smb_fid, &infolev) != 0)
108 return (SDRC_ERROR);
109
110 if (smb_query_by_fid(sr, xa, infolev) != 0)
111 return (SDRC_ERROR);
112
113 return (SDRC_SUCCESS);
114 }
115
116 /*
117 * smb_com_trans2_query_path_information
118 */
119 smb_sdrc_t
120 smb_com_trans2_query_path_information(smb_request_t *sr, smb_xa_t *xa)
121 {
122 uint16_t infolev;
123 smb_fqi_t *fqi = &sr->arg.dirop.fqi;
124
125 if (STYPE_ISIPC(sr->tid_tree->t_res_type)) {
126 smbsr_error(sr, NT_STATUS_INVALID_DEVICE_REQUEST,
127 ERRDOS, ERROR_INVALID_FUNCTION);
128 return (SDRC_ERROR);
129 }
130
131 if (smb_mbc_decodef(&xa->req_param_mb, "%w4.u",
132 sr, &infolev, &fqi->fq_path.pn_path) != 0)
133 return (SDRC_ERROR);
134
135 if (smb_query_by_path(sr, xa, infolev) != 0)
136 return (SDRC_ERROR);
137
138 return (SDRC_SUCCESS);
139 }
140
141 /*
142 * smb_com_query_information (aka getattr)
143 */
144 smb_sdrc_t
145 smb_pre_query_information(smb_request_t *sr)
146 {
147 int rc;
148 smb_fqi_t *fqi = &sr->arg.dirop.fqi;
149
150 rc = smbsr_decode_data(sr, "%S", sr, &fqi->fq_path.pn_path);
151
152 DTRACE_SMB_START(op__QueryInformation, smb_request_t *, sr);
153
154 return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
155 }
156
157 void
158 smb_post_query_information(smb_request_t *sr)
159 {
160 DTRACE_SMB_DONE(op__QueryInformation, smb_request_t *, sr);
161 }
162
163 smb_sdrc_t
164 smb_com_query_information(smb_request_t *sr)
165 {
166 uint16_t infolev = SMB_QUERY_INFORMATION;
167
168 if (STYPE_ISIPC(sr->tid_tree->t_res_type)) {
169 smbsr_error(sr, NT_STATUS_ACCESS_DENIED,
170 ERRDOS, ERROR_ACCESS_DENIED);
171 return (SDRC_ERROR);
172 }
173
174 if (smb_query_by_path(sr, NULL, infolev) != 0)
175 return (SDRC_ERROR);
176
177 return (SDRC_SUCCESS);
178 }
179
180 /*
181 * smb_com_query_information2 (aka getattre)
182 */
183 smb_sdrc_t
184 smb_pre_query_information2(smb_request_t *sr)
185 {
186 int rc;
187 rc = smbsr_decode_vwv(sr, "w", &sr->smb_fid);
188
189 DTRACE_SMB_START(op__QueryInformation2, smb_request_t *, sr);
190
191 return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
192 }
193
194 void
195 smb_post_query_information2(smb_request_t *sr)
196 {
197 DTRACE_SMB_DONE(op__QueryInformation2, smb_request_t *, sr);
198 }
199
200 smb_sdrc_t
201 smb_com_query_information2(smb_request_t *sr)
202 {
203 uint16_t infolev = SMB_QUERY_INFORMATION2;
204
205 if (smb_query_by_fid(sr, NULL, infolev) != 0)
206 return (SDRC_ERROR);
207
208 return (SDRC_SUCCESS);
209 }
210
211 /*
212 * smb_query_by_fid
213 *
214 * Common code for querying file information by open file (or pipe) id.
215 * Use the id to identify the node / pipe object and request the
216 * smb_queryinfo_t data for that object.
217 */
218 static int
219 smb_query_by_fid(smb_request_t *sr, smb_xa_t *xa, uint16_t infolev)
220 {
221 int rc;
222 smb_queryinfo_t *qinfo;
223 smb_node_t *node;
224 smb_opipe_t *opipe;
225
226 smbsr_lookup_file(sr);
227
228 if (sr->fid_ofile == NULL) {
229 smbsr_error(sr, NT_STATUS_INVALID_HANDLE, ERRDOS, ERRbadfid);
230 return (-1);
231 }
232
233 if (infolev == SMB_INFO_IS_NAME_VALID) {
234 smbsr_error(sr, 0, ERRDOS, ERROR_INVALID_LEVEL);
235 smbsr_release_file(sr);
236 return (-1);
237 }
238
239 if ((sr->fid_ofile->f_ftype == SMB_FTYPE_MESG_PIPE) &&
240 (!smb_query_pipe_valid_infolev(sr, infolev))) {
241 smbsr_release_file(sr);
242 return (-1);
243 }
244
245 sr->user_cr = smb_ofile_getcred(sr->fid_ofile);
246 qinfo = kmem_alloc(sizeof (smb_queryinfo_t), KM_SLEEP);
247
248 switch (sr->fid_ofile->f_ftype) {
249 case SMB_FTYPE_DISK:
250 node = sr->fid_ofile->f_node;
251 rc = smb_query_fileinfo(sr, node, infolev, qinfo);
252 break;
253 case SMB_FTYPE_MESG_PIPE:
254 opipe = sr->fid_ofile->f_pipe;
255 rc = smb_query_pipeinfo(sr, opipe, infolev, qinfo);
256 break;
257 default:
258 smbsr_error(sr, 0, ERRDOS, ERRbadfile);
259 rc = -1;
260 break;
261 }
262
263 if (rc == 0)
264 rc = smb_query_encode_response(sr, xa, infolev, qinfo);
265
266 kmem_free(qinfo, sizeof (smb_queryinfo_t));
267 smbsr_release_file(sr);
268 return (rc);
269 }
270
271 /*
272 * smb_query_by_path
273 *
274 * Common code for querying file information by file name.
275 * Use the file name to identify the node object and request the
276 * smb_queryinfo_t data for that node.
277 *
278 * Path should be set in sr->arg.dirop.fqi.fq_path prior to
279 * calling smb_query_by_path.
280 *
281 * Querying attributes on a named pipe by name is an error and
282 * is handled in the calling functions so that they can return
283 * the appropriate error status code (which differs by caller).
284 */
285 static int
286 smb_query_by_path(smb_request_t *sr, smb_xa_t *xa, uint16_t infolev)
287 {
288 smb_queryinfo_t *qinfo;
289 smb_node_t *node, *dnode;
290 smb_pathname_t *pn;
291 int rc;
292
293 /*
294 * The function smb_query_fileinfo is used here and in
295 * smb_query_by_fid. That common function needs this
296 * one to call it with a NULL fid_ofile, so check here.
297 * Note: smb_query_by_fid enforces the opposite.
298 *
299 * In theory we could ASSERT this, but whether we have
300 * fid_ofile set here depends on what sequence of SMB
301 * commands the client has sent in this message, so
302 * let's be cautious and handle it as an error.
303 */
304 if (sr->fid_ofile != NULL)
305 return (-1);
306
307
308 /* VALID, but not yet supported */
309 if (infolev == SMB_FILE_ACCESS_INFORMATION) {
310 smbsr_error(sr, 0, ERRDOS, ERROR_INVALID_LEVEL);
311 return (-1);
312 }
313
314 pn = &sr->arg.dirop.fqi.fq_path;
315 smb_pathname_init(sr, pn, pn->pn_path);
316 if (!smb_pathname_validate(sr, pn))
317 return (-1);
318
319 qinfo = kmem_alloc(sizeof (smb_queryinfo_t), KM_SLEEP);
320
321 rc = smb_pathname_reduce(sr, sr->user_cr, pn->pn_path,
322 sr->tid_tree->t_snode, sr->tid_tree->t_snode, &dnode,
323 qinfo->qi_name);
324
325 if (rc == 0) {
326 rc = smb_fsop_lookup_name(sr, sr->user_cr, SMB_FOLLOW_LINKS,
327 sr->tid_tree->t_snode, dnode, qinfo->qi_name, &node);
328 smb_node_release(dnode);
329 }
330
331 if (rc != 0) {
332 smbsr_errno(sr, rc);
333
334 kmem_free(qinfo, sizeof (smb_queryinfo_t));
335 return (-1);
336 }
337
338 if ((sr->smb_flg2 & SMB_FLAGS2_DFS) && smb_node_is_dfslink(node)) {
339 smbsr_error(sr, NT_STATUS_PATH_NOT_COVERED, ERRSRV, ERRbadpath);
340 kmem_free(qinfo, sizeof (smb_queryinfo_t));
341 smb_node_release(node);
342 return (-1);
343 }
344
345 rc = smb_query_fileinfo(sr, node, infolev, qinfo);
346 if (rc != 0) {
347 kmem_free(qinfo, sizeof (smb_queryinfo_t));
348 smb_node_release(node);
349 return (rc);
350 }
351
352 /* If delete_on_close - NT_STATUS_DELETE_PENDING */
353 if (qinfo->qi_delete_on_close) {
354 smbsr_error(sr, NT_STATUS_DELETE_PENDING,
355 ERRDOS, ERROR_ACCESS_DENIED);
356 kmem_free(qinfo, sizeof (smb_queryinfo_t));
357 smb_node_release(node);
358 return (-1);
359 }
360
361 rc = smb_query_encode_response(sr, xa, infolev, qinfo);
362 kmem_free(qinfo, sizeof (smb_queryinfo_t));
363 smb_node_release(node);
364 return (rc);
365 }
366
367 /*
368 * smb_size32
369 * Some responses only support 32 bit file sizes. If the file size
370 * exceeds UINT_MAX (32 bit) we return UINT_MAX in the response.
371 */
372 static uint32_t
373 smb_size32(u_offset_t size)
374 {
375 return ((size > UINT_MAX) ? UINT_MAX : (uint32_t)size);
376 }
377
378 /*
379 * smb_query_encode_response
380 *
381 * Encode the data from smb_queryinfo_t into client response
382 */
383 int
384 smb_query_encode_response(smb_request_t *sr, smb_xa_t *xa,
385 uint16_t infolev, smb_queryinfo_t *qinfo)
386 {
387 uint16_t dattr;
388 u_offset_t datasz, allocsz;
389 uint32_t status;
390
391 dattr = qinfo->qi_attr.sa_dosattr & FILE_ATTRIBUTE_MASK;
392 datasz = qinfo->qi_attr.sa_vattr.va_size;
393 allocsz = qinfo->qi_attr.sa_allocsz;
394
395 switch (infolev) {
396 case SMB_QUERY_INFORMATION:
397 (void) smbsr_encode_result(sr, 10, 0, "bwll10.w",
398 10,
399 dattr,
400 smb_time_gmt_to_local(sr, qinfo->qi_mtime.tv_sec),
401 smb_size32(datasz),
402 0);
403 break;
404
405 case SMB_QUERY_INFORMATION2:
406 (void) smbsr_encode_result(sr, 11, 0, "byyyllww",
407 11,
408 smb_time_gmt_to_local(sr, qinfo->qi_crtime.tv_sec),
409 smb_time_gmt_to_local(sr, qinfo->qi_atime.tv_sec),
410 smb_time_gmt_to_local(sr, qinfo->qi_mtime.tv_sec),
411 smb_size32(datasz), smb_size32(allocsz), dattr, 0);
412 break;
413
414 case SMB_FILE_ACCESS_INFORMATION:
415 ASSERT(sr->fid_ofile);
416 (void) smb_mbc_encodef(&xa->rep_data_mb, "l",
417 sr->fid_ofile->f_granted_access);
418 break;
419
420 case SMB_INFO_STANDARD:
421 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
422 (void) smb_mbc_encodef(&xa->rep_data_mb,
423 ((sr->session->native_os == NATIVE_OS_WIN95) ?
424 "YYYllw" : "yyyllw"),
425 smb_time_gmt_to_local(sr, qinfo->qi_crtime.tv_sec),
426 smb_time_gmt_to_local(sr, qinfo->qi_atime.tv_sec),
427 smb_time_gmt_to_local(sr, qinfo->qi_mtime.tv_sec),
428 smb_size32(datasz), smb_size32(allocsz), dattr);
429 break;
430
431 case SMB_INFO_QUERY_EA_SIZE:
432 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
433 (void) smb_mbc_encodef(&xa->rep_data_mb,
434 ((sr->session->native_os == NATIVE_OS_WIN95) ?
435 "YYYllwl" : "yyyllwl"),
436 smb_time_gmt_to_local(sr, qinfo->qi_crtime.tv_sec),
437 smb_time_gmt_to_local(sr, qinfo->qi_atime.tv_sec),
438 smb_time_gmt_to_local(sr, qinfo->qi_mtime.tv_sec),
439 smb_size32(datasz), smb_size32(allocsz), dattr, 0);
440 break;
441
442 case SMB_INFO_QUERY_ALL_EAS:
443 case SMB_INFO_QUERY_EAS_FROM_LIST:
444 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
445 (void) smb_mbc_encodef(&xa->rep_data_mb, "l", 0);
446 break;
447
448 case SMB_INFO_IS_NAME_VALID:
449 break;
450
451 case SMB_QUERY_FILE_BASIC_INFO:
452 case SMB_FILE_BASIC_INFORMATION:
453 /*
454 * NT includes 6 bytes (spec says 4) at the end of this
455 * response, which are required by NetBench 5.01.
456 */
457 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
458 (void) smb_mbc_encodef(&xa->rep_data_mb, "TTTTw6.",
459 &qinfo->qi_crtime,
460 &qinfo->qi_atime,
461 &qinfo->qi_mtime,
462 &qinfo->qi_ctime,
463 dattr);
464 break;
465
466 case SMB_QUERY_FILE_STANDARD_INFO:
467 case SMB_FILE_STANDARD_INFORMATION:
468 /* 2-byte pad at end */
469 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
470 (void) smb_mbc_encodef(&xa->rep_data_mb, "qqlbb2.",
471 (uint64_t)allocsz,
472 (uint64_t)datasz,
473 qinfo->qi_attr.sa_vattr.va_nlink,
474 qinfo->qi_delete_on_close,
475 qinfo->qi_isdir);
476 break;
477
478 case SMB_QUERY_FILE_EA_INFO:
479 case SMB_FILE_EA_INFORMATION:
480 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
481 (void) smb_mbc_encodef(&xa->rep_data_mb, "l", 0);
482 break;
483
484 case SMB_QUERY_FILE_NAME_INFO:
485 case SMB_FILE_NAME_INFORMATION:
486 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
487 (void) smb_mbc_encodef(&xa->rep_data_mb, "%lu", sr,
488 qinfo->qi_namelen, qinfo->qi_name);
489 break;
490
491 case SMB_QUERY_FILE_ALL_INFO:
492 case SMB_FILE_ALL_INFORMATION:
493 /*
494 * There is a 6-byte pad between Attributes and AllocationSize,
495 * and a 2-byte pad after the Directory field.
496 */
497 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
498 (void) smb_mbc_encodef(&xa->rep_data_mb, "TTTTw6.qqlbb2.l",
499 &qinfo->qi_crtime,
500 &qinfo->qi_atime,
501 &qinfo->qi_mtime,
502 &qinfo->qi_ctime,
503 dattr,
504 (uint64_t)allocsz,
505 (uint64_t)datasz,
506 qinfo->qi_attr.sa_vattr.va_nlink,
507 qinfo->qi_delete_on_close,
508 qinfo->qi_isdir,
509 0);
510
511 (void) smb_mbc_encodef(&xa->rep_data_mb, "%lu",
512 sr, qinfo->qi_namelen, qinfo->qi_name);
513 break;
514
515 case SMB_QUERY_FILE_ALT_NAME_INFO:
516 case SMB_FILE_ALT_NAME_INFORMATION:
517 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
518 (void) smb_mbc_encodef(&xa->rep_data_mb, "%lU", sr,
519 smb_wcequiv_strlen(qinfo->qi_shortname),
520 qinfo->qi_shortname);
521 break;
522
523 case SMB_QUERY_FILE_STREAM_INFO:
524 case SMB_FILE_STREAM_INFORMATION:
525 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
526 status = smb_query_stream_info(sr, &xa->rep_data_mb, qinfo);
527 if (status)
528 smbsr_status(sr, status, 0, 0);
529 break;
530
531 case SMB_QUERY_FILE_COMPRESSION_INFO:
532 case SMB_FILE_COMPRESSION_INFORMATION:
533 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
534 (void) smb_mbc_encodef(&xa->rep_data_mb, "qwbbb3.",
535 datasz, 0, 0, 0, 0);
536 break;
537
538 case SMB_FILE_INTERNAL_INFORMATION:
539 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
540 (void) smb_mbc_encodef(&xa->rep_data_mb, "q",
541 qinfo->qi_attr.sa_vattr.va_nodeid);
542 break;
543
544 case SMB_FILE_NETWORK_OPEN_INFORMATION:
545 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
546 (void) smb_mbc_encodef(&xa->rep_data_mb, "TTTTqql4.",
547 &qinfo->qi_crtime,
548 &qinfo->qi_atime,
549 &qinfo->qi_mtime,
550 &qinfo->qi_ctime,
551 (uint64_t)allocsz,
552 (uint64_t)datasz,
553 (uint32_t)dattr);
554 break;
555
556 case SMB_FILE_ATTR_TAG_INFORMATION:
557 /*
558 * If dattr includes FILE_ATTRIBUTE_REPARSE_POINT, the
559 * second dword should be the reparse tag. Otherwise
560 * the tag value should be set to zero.
561 * We don't support reparse points, so we set the tag
562 * to zero.
563 */
564 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
565 (void) smb_mbc_encodef(&xa->rep_data_mb, "ll",
566 (uint32_t)dattr, 0);
567 break;
568
569 default:
570 if ((infolev > 1000) && smb_query_passthru)
571 smbsr_error(sr, NT_STATUS_NOT_SUPPORTED,
572 ERRDOS, ERROR_NOT_SUPPORTED);
573 else
574 smbsr_error(sr, 0, ERRDOS, ERROR_INVALID_LEVEL);
575 return (-1);
576 }
577
578 return (0);
579 }
580
581 /*
582 * smb_encode_stream_info
583 *
584 * This function encodes the streams information.
585 * The following rules about how have been derived from observed NT
586 * behaviour.
587 *
588 * If the target is a file:
589 * 1. If there are no named streams, the response should still contain
590 * an entry for the unnamed stream.
591 * 2. If there are named streams, the response should contain an entry
592 * for the unnamed stream followed by the entries for the named
593 * streams.
594 *
595 * If the target is a directory:
596 * 1. If there are no streams, the response is complete. Directories
597 * do not report the unnamed stream.
598 * 2. If there are streams, the response should contain entries for
599 * those streams but there should not be an entry for the unnamed
600 * stream.
601 *
602 * Note that the stream name lengths exclude the null terminator but
603 * the field lengths (i.e. next offset calculations) need to include
604 * the null terminator and be padded to a multiple of 8 bytes. The
605 * last entry does not seem to need any padding.
606 *
607 * If an error is encountered when trying to read the stream entries
608 * (smb_odir_read_streaminfo) it is treated as if there are no [more]
609 * entries. The entries that have been read so far are returned and
610 * no error is reported.
611 *
612 * If the response buffer is not large enough to return all of the
613 * named stream entries, the entries that do fit are returned and
614 * a warning code is set (NT_STATUS_BUFFER_OVERFLOW). The next_offset
615 * value in the last returned entry must be 0.
616 */
617 uint32_t
618 smb_query_stream_info(smb_request_t *sr, mbuf_chain_t *mbc,
619 smb_queryinfo_t *qinfo)
620 {
621 char *stream_name;
622 uint32_t next_offset;
623 uint32_t stream_nlen;
624 uint32_t pad;
625 u_offset_t datasz, allocsz;
626 smb_streaminfo_t *sinfo, *sinfo_next;
627 int rc = 0;
628 boolean_t done = B_FALSE;
629 boolean_t eos = B_FALSE;
630 smb_odir_t *od = NULL;
631 uint32_t status = 0;
632
633 smb_node_t *fnode = qinfo->qi_node;
634 smb_attr_t *attr = &qinfo->qi_attr;
635
636 ASSERT(fnode);
637 if (SMB_IS_STREAM(fnode)) {
638 fnode = fnode->n_unode;
639 ASSERT(fnode);
640 }
641 ASSERT(fnode->n_magic == SMB_NODE_MAGIC);
642 ASSERT(fnode->n_state != SMB_NODE_STATE_DESTROYING);
643
644 sinfo = kmem_alloc(sizeof (smb_streaminfo_t), KM_SLEEP);
645 sinfo_next = kmem_alloc(sizeof (smb_streaminfo_t), KM_SLEEP);
646 datasz = attr->sa_vattr.va_size;
647 allocsz = attr->sa_allocsz;
648
649 status = smb_odir_openat(sr, fnode, &od);
650 switch (status) {
651 case 0:
652 break;
653 case NT_STATUS_OBJECT_NAME_NOT_FOUND:
654 case NT_STATUS_NO_SUCH_FILE:
655 case NT_STATUS_NOT_SUPPORTED:
656 /* No streams. */
657 status = 0;
658 done = B_TRUE;
659 break;
660 default:
661 return (status);
662 }
663
664 if (!done) {
665 rc = smb_odir_read_streaminfo(sr, od, sinfo, &eos);
666 if ((rc != 0) || (eos))
667 done = B_TRUE;
668 }
669
670 /* If not a directory, encode an entry for the unnamed stream. */
671 if (qinfo->qi_isdir == 0) {
672 stream_name = "::$DATA";
673 stream_nlen = smb_ascii_or_unicode_strlen(sr, stream_name);
674 next_offset = SMB_STREAM_ENCODE_FIXED_SZ + stream_nlen +
675 smb_ascii_or_unicode_null_len(sr);
676
677 /* Can unnamed stream fit in response buffer? */
678 if (MBC_ROOM_FOR(mbc, next_offset) == 0) {
679 done = B_TRUE;
680 status = NT_STATUS_BUFFER_OVERFLOW;
681 } else {
682 /* Can first named stream fit in rsp buffer? */
683 if (!done && !smb_stream_fits(sr, mbc, sinfo->si_name,
684 next_offset)) {
685 done = B_TRUE;
686 status = NT_STATUS_BUFFER_OVERFLOW;
687 }
688
689 if (done)
690 next_offset = 0;
691
692 (void) smb_mbc_encodef(mbc, "%llqqu", sr,
693 next_offset, stream_nlen, datasz, allocsz,
694 stream_name);
695 }
696 }
697
698 /*
699 * If there is no next entry, or there is not enough space in
700 * the response buffer for the next entry, the next_offset and
701 * padding are 0.
702 */
703 while (!done) {
704 stream_nlen = smb_ascii_or_unicode_strlen(sr, sinfo->si_name);
705 sinfo_next->si_name[0] = 0;
706
707 rc = smb_odir_read_streaminfo(sr, od, sinfo_next, &eos);
708 if ((rc != 0) || (eos)) {
709 done = B_TRUE;
710 } else {
711 next_offset = SMB_STREAM_ENCODE_FIXED_SZ +
712 stream_nlen +
713 smb_ascii_or_unicode_null_len(sr);
714 pad = smb_pad_align(next_offset, 8);
715 next_offset += pad;
716
717 /* Can next named stream fit in response buffer? */
718 if (!smb_stream_fits(sr, mbc, sinfo_next->si_name,
719 next_offset)) {
720 done = B_TRUE;
721 status = NT_STATUS_BUFFER_OVERFLOW;
722 }
723 }
724
725 if (done) {
726 next_offset = 0;
727 pad = 0;
728 }
729
730 (void) smb_mbc_encodef(mbc, "%llqqu#.",
731 sr, next_offset, stream_nlen,
732 sinfo->si_size, sinfo->si_alloc_size,
733 sinfo->si_name, pad);
734
735 (void) memcpy(sinfo, sinfo_next, sizeof (smb_streaminfo_t));
736 }
737
738 kmem_free(sinfo, sizeof (smb_streaminfo_t));
739 kmem_free(sinfo_next, sizeof (smb_streaminfo_t));
740 if (od) {
741 smb_odir_close(od);
742 smb_odir_release(od);
743 }
744
745 return (status);
746 }
747
748 /*
749 * smb_stream_fits
750 *
751 * Check if the named stream entry can fit in the response buffer.
752 *
753 * Required space =
754 * offset (size of current entry)
755 * + SMB_STREAM_ENCODE_FIXED_SIZE
756 * + length of encoded stream name
757 * + length of null terminator
758 * + alignment padding
759 */
760 static boolean_t
761 smb_stream_fits(smb_request_t *sr, mbuf_chain_t *mbc,
762 char *name, uint32_t offset)
763 {
764 uint32_t len, pad;
765
766 len = SMB_STREAM_ENCODE_FIXED_SZ +
767 smb_ascii_or_unicode_strlen(sr, name) +
768 smb_ascii_or_unicode_null_len(sr);
769 pad = smb_pad_align(len, 8);
770 len += pad;
771
772 return (MBC_ROOM_FOR(mbc, offset + len) != 0);
773 }
774
775 /*
776 * smb_query_fileinfo
777 *
778 * Populate smb_queryinfo_t structure for SMB_FTYPE_DISK
779 * (This should become an smb_ofile / smb_node function.)
780 */
781 int
782 smb_query_fileinfo(smb_request_t *sr, smb_node_t *node, uint16_t infolev,
783 smb_queryinfo_t *qinfo)
784 {
785 int rc = 0;
786
787 /* If shortname required but not supported -> OBJECT_NAME_NOT_FOUND */
788 if ((infolev == SMB_QUERY_FILE_ALT_NAME_INFO) ||
789 (infolev == SMB_FILE_ALT_NAME_INFORMATION)) {
790 if (!smb_tree_has_feature(sr->tid_tree, SMB_TREE_SHORTNAMES)) {
791 smbsr_error(sr, NT_STATUS_OBJECT_NAME_NOT_FOUND,
792 ERRDOS, ERROR_FILE_NOT_FOUND);
793 return (-1);
794 }
795 }
796
797 (void) bzero(qinfo, sizeof (smb_queryinfo_t));
798
799 /* See: smb_query_encode_response */
800 qinfo->qi_attr.sa_mask = SMB_AT_ALL;
801 rc = smb_node_getattr(sr, node, sr->user_cr, sr->fid_ofile,
802 &qinfo->qi_attr);
803 if (rc != 0) {
804 smbsr_error(sr, NT_STATUS_INTERNAL_ERROR,
805 ERRDOS, ERROR_INTERNAL_ERROR);
806 return (-1);
807 }
808
809 qinfo->qi_node = node;
810 qinfo->qi_delete_on_close =
811 (node->flags & NODE_FLAGS_DELETE_ON_CLOSE) != 0;
812 qinfo->qi_isdir = smb_node_is_dir(node);
813
814 /*
815 * The number of links reported should be the number of
816 * non-deleted links. Thus if delete_on_close is set,
817 * decrement the link count.
818 */
819 if (qinfo->qi_delete_on_close &&
820 qinfo->qi_attr.sa_vattr.va_nlink > 0) {
821 --(qinfo->qi_attr.sa_vattr.va_nlink);
822 }
823
824 /*
825 * populate name, namelen and shortname ONLY for the information
826 * levels that require these fields
827 */
828 switch (infolev) {
829 case SMB_QUERY_FILE_ALL_INFO:
830 case SMB_FILE_ALL_INFORMATION:
831 rc = smb_query_pathname(sr, node, B_TRUE, qinfo);
832 break;
833 case SMB_QUERY_FILE_NAME_INFO:
834 case SMB_FILE_NAME_INFORMATION:
835 rc = smb_query_pathname(sr, node, B_FALSE, qinfo);
836 break;
837 case SMB_QUERY_FILE_ALT_NAME_INFO:
838 case SMB_FILE_ALT_NAME_INFORMATION:
839 smb_query_shortname(node, qinfo);
840 break;
841 default:
842 break;
843 }
844
845 if (rc != 0) {
846 smbsr_errno(sr, rc);
847 return (-1);
848 }
849 return (0);
850 }
851
852 /*
853 * smb_query_pathname
854 *
855 * Determine the absolute pathname of 'node' within the share.
856 * For some levels (e.g. ALL_INFO) the pathname should include the
857 * sharename for others (e.g. NAME_INFO) the pathname should be
858 * relative to the share.
859 * For example if the node represents file "test1.txt" in directory
860 * "dir1" on share "share1"
861 * - if include_share is TRUE the pathname would be: \share1\dir1\test1.txt
862 * - if include_share is FALSE the pathname would be: \dir1\test1.txt
863 *
864 * For some reason NT will not show the security tab in the root
865 * directory of a mapped drive unless the filename length is greater
866 * than one. So if the length is 1 we set it to 2 to persuade NT to
867 * show the tab. It should be safe because of the null terminator.
868 */
869 static int
870 smb_query_pathname(smb_request_t *sr, smb_node_t *node, boolean_t include_share,
871 smb_queryinfo_t *qinfo)
872 {
873 smb_tree_t *tree = sr->tid_tree;
874 char *buf = qinfo->qi_name;
875 size_t buflen = MAXPATHLEN;
876 size_t len;
877 int rc;
878
879 if (include_share) {
880 len = snprintf(buf, buflen, "\\%s", tree->t_sharename);
881 if (len == (buflen - 1))
882 return (ENAMETOOLONG);
883
884 buf += len;
885 buflen -= len;
886 }
887
888 if (node == tree->t_snode) {
889 if (!include_share)
890 (void) strlcpy(buf, "\\", buflen);
891 return (0);
892 }
893
894 rc = smb_node_getshrpath(node, tree, buf, buflen);
895 if (rc == 0) {
896 qinfo->qi_namelen =
897 smb_ascii_or_unicode_strlen(sr, qinfo->qi_name);
898 if (qinfo->qi_namelen == 1)
899 qinfo->qi_namelen = 2;
900 }
901 return (rc);
902 }
903
904 /*
905 * smb_query_shortname
906 *
907 * If the node is a named stream, use its associated
908 * unnamed stream name to determine the shortname.
909 * If a shortname is required (smb_needs_mangle()), generate it
910 * using smb_mangle(), otherwise, convert the original name to
911 * upper-case and return it as the alternative name.
912 */
913 void
914 smb_query_shortname(smb_node_t *node, smb_queryinfo_t *qinfo)
915 {
916 char *namep;
917
918 if (SMB_IS_STREAM(node))
919 namep = node->n_unode->od_name;
920 else
921 namep = node->od_name;
922
923 if (smb_needs_mangled(namep)) {
924 smb_mangle(namep, qinfo->qi_attr.sa_vattr.va_nodeid,
925 qinfo->qi_shortname, SMB_SHORTNAMELEN);
926 } else {
927 (void) strlcpy(qinfo->qi_shortname, namep, SMB_SHORTNAMELEN);
928 (void) smb_strupr(qinfo->qi_shortname);
929 }
930 }
931
932 /*
933 * smb_query_pipeinfo
934 *
935 * Populate smb_queryinfo_t structure for SMB_FTYPE_MESG_PIPE
936 * (This should become an smb_opipe function.)
937 */
938 static int
939 smb_query_pipeinfo(smb_request_t *sr, smb_opipe_t *opipe, uint16_t infolev,
940 smb_queryinfo_t *qinfo)
941 {
942 char *namep = opipe->p_name;
943
944 (void) bzero(qinfo, sizeof (smb_queryinfo_t));
945 qinfo->qi_node = NULL;
946 qinfo->qi_attr.sa_vattr.va_nlink = 1;
947 qinfo->qi_delete_on_close = 1;
948 qinfo->qi_isdir = 0;
949
950 if ((infolev == SMB_INFO_STANDARD) ||
951 (infolev == SMB_INFO_QUERY_EA_SIZE) ||
952 (infolev == SMB_QUERY_INFORMATION2)) {
953 qinfo->qi_attr.sa_dosattr = 0;
954 } else {
955 qinfo->qi_attr.sa_dosattr = FILE_ATTRIBUTE_NORMAL;
956 }
957
958 /* If the leading \ is missing from the pipe name, add it. */
959 if (*namep != '\\')
960 (void) snprintf(qinfo->qi_name, MAXNAMELEN, "\\%s", namep);
961 else
962 (void) strlcpy(qinfo->qi_name, namep, MAXNAMELEN);
963
964 qinfo->qi_namelen=
965 smb_ascii_or_unicode_strlen(sr, qinfo->qi_name);
966
967 return (0);
968 }
969
970 /*
971 * smb_query_pipe_valid_infolev
972 *
973 * If the infolev is not valid for a message pipe, the error
974 * information is set in sr and B_FALSE is returned.
975 * Otherwise, returns B_TRUE.
976 */
977 static boolean_t
978 smb_query_pipe_valid_infolev(smb_request_t *sr, uint16_t infolev)
979 {
980 switch (infolev) {
981 case SMB_INFO_QUERY_ALL_EAS:
982 smbsr_error(sr, NT_STATUS_ACCESS_DENIED,
983 ERRDOS, ERROR_ACCESS_DENIED);
984 return (B_FALSE);
985
986 case SMB_QUERY_FILE_ALT_NAME_INFO:
987 case SMB_FILE_ALT_NAME_INFORMATION:
988 case SMB_QUERY_FILE_STREAM_INFO:
989 case SMB_FILE_STREAM_INFORMATION:
990 case SMB_QUERY_FILE_COMPRESSION_INFO:
991 case SMB_FILE_COMPRESSION_INFORMATION:
992 case SMB_FILE_NETWORK_OPEN_INFORMATION:
993 case SMB_FILE_ATTR_TAG_INFORMATION:
994 smbsr_error(sr, NT_STATUS_INVALID_PARAMETER,
995 ERRDOS, ERROR_INVALID_PARAMETER);
996 return (B_FALSE);
997 }
998
999 return (B_TRUE);
1000 }