xref: /illumos-gate/usr/src/uts/common/fs/smbsrv/smb_find.c (revision 9ccfd38e64be4d6a2c01daa15fe7f5627122bdc2)
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  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
23  * Copyright 2017 Nexenta Systems, Inc.  All rights reserved.
24  */
25 
26 #include <smbsrv/smb_kproto.h>
27 
28 /*
29  * smb_com_search
30  * smb_com_find, smb_com_find_close
31  * smb_find_unique
32  *
33  * These commands are used for directory searching. They share the same
34  * message formats, defined below:
35  *
36  * Client Request                     Description
37  * ---------------------------------- ---------------------------------
38  *
39  * UCHAR WordCount;                   Count of parameter words = 2
40  * USHORT MaxCount;                   Number of dir. entries to return
41  * USHORT SearchAttributes;
42  * USHORT ByteCount;                  Count of data bytes;  min = 5
43  * UCHAR BufferFormat1;               0x04 -- ASCII
44  * UCHAR FileName[];                  File name, may be null
45  * UCHAR BufferFormat2;               0x05 -- Variable block
46  * USHORT ResumeKeyLength;            Length of resume key, may be 0
47  * UCHAR ResumeKey[];                 Resume key
48  *
49  * FileName specifies the file to be sought.  SearchAttributes indicates
50  * the attributes that the file must have.  If  SearchAttributes is
51  * zero then only normal files are returned.  If the system file, hidden or
52  * directory attributes are specified then the search is inclusive - both the
53  * specified type(s) of files and normal files are returned.  If the volume
54  * label attribute is specified then the search is exclusive, and only the
55  * volume label entry is returned.
56  *
57  * MaxCount specifies the number of directory entries to be returned.
58  *
59  * Server Response                    Description
60  * ---------------------------------- ---------------------------------
61  *
62  * UCHAR WordCount;                   Count of parameter words = 1
63  * USHORT Count;                      Number of entries returned
64  * USHORT ByteCount;                  Count of data bytes;  min = 3
65  * UCHAR BufferFormat;                0x05 -- Variable block
66  * USHORT DataLength;                 Length of data
67  * UCHAR DirectoryInformationData[];  Data
68  *
69  * The response will contain one or more directory entries as determined by
70  * the Count field.  No more than MaxCount entries will be returned.  Only
71  * entries that match the sought FileName and SearchAttributes combination
72  * will be returned.
73  *
74  * ResumeKey must be null (length = 0) on the initial search request.
75  * Subsequent search requests intended to continue a search must contain
76  * the ResumeKey field extracted from the last directory entry of the
77  * previous response.  ResumeKey is self-contained, for calls containing
78  * a non-zero ResumeKey neither the SearchAttributes or FileName fields
79  * will be valid in the request.  ResumeKey has the following format:
80  *
81  * Resume Key Field                   Description
82  * ---------------------------------- ---------------------------------
83  *
84  * UCHAR Reserved;                    bit 7 - consumer use
85  *                                    bits 5,6 - system use (must preserve)
86  *                                    bits 0-4 - server use (must preserve)
87  * UCHAR FileName[11];                Name of the returned file
88  * UCHAR ReservedForServer[5];        Client must not modify
89  *                                    byte 0 - uniquely identifies find
90  *                                    through find_close
91  *                                    bytes 1-4 - available for server use
92  *                                    (must be non-zero)
93  * UCHAR ReservedForConsumer[4];      Server must not modify
94  *
95  * FileName is 8.3 format, with the three character extension left
96  * justified into FileName[9-11].
97  *
98  * There may be multiple matching entries in response to a single request
99  * as wildcards are supported in the last component of FileName of the
100  * initial request.
101  *
102  * Returned directory entries in the DirectoryInformationData field of the
103  * response each have the following format:
104  *
105  * Directory Information Field        Description
106  * ---------------------------------- ---------------------------------
107  *
108  * SMB_RESUME_KEY ResumeKey;          Described above
109  * UCHAR FileAttributes;              Attributes of the found file
110  * SMB_TIME LastWriteTime;            Time file was last written
111  * SMB_DATE LastWriteDate;            Date file was last written
112  * ULONG FileSize;                    Size of the file
113  * UCHAR FileName[13];                ASCII, space-filled null terminated
114  *
115  * FileName must conform to 8.3 rules, and is padded after the extension
116  * with 0x20 characters if necessary.
117  *
118  * As can be seen from the above structure, these commands cannot return
119  * long filenames, and cannot return UNICODE filenames.
120  *
121  * Files which have a size greater than 2^32 bytes should have the least
122  * significant 32 bits of their size returned in FileSize.
123  *
124  * smb_com_search
125  * --------------
126  *
127  * If the client is prior to the LANMAN1.0 dialect, the returned FileName
128  * should be uppercased.
129  * If the client has negotiated a dialect prior to the LANMAN1.0 dialect,
130  * or if bit0 of the Flags2 SMB header field of the request is clear,
131  * the returned FileName should be uppercased.
132  *
133  * SMB_COM_SEARCH terminates when either the requested maximum number of
134  * entries that match the named file are found, or the end of directory is
135  * reached without the maximum number of matches being found.  A response
136  * containing no entries indicates that no matching entries were found
137  * between the starting point of the search and the end of directory.
138  *
139  *
140  * The find, find_close and find_unique protocols may be used in place of
141  * the core "search" protocol when LANMAN 1.0 dialect has been negotiated.
142  *
143  * smb_com_find
144  * ------------
145  *
146  * The find protocol is used to match the find OS/2 system call.
147  *
148  * The format of the find protocol is the same as the core "search" protocol.
149  * The difference is that the directory is logically Opened with a find protocol
150  * and logically closed with the find close protocol.
151  * As is true of a failing open, if a find request (find "first" request where
152  * resume_key is null) fails (no entries are found), no find close protocol is
153  * expected.
154  *
155  * If no global characters are present, a "find unique" protocol should be used
156  * (only one entry is expected and find close need not be sent).
157  *
158  * A find request will terminate when either the requested maximum number of
159  * entries that match the named file are found, or the end of directory is
160  * reached without the maximum number of matches being found. A response
161  * containing no entries indicates that no matching entries were found between
162  * the starting point of the search and the end of directory.
163  *
164  * If a find requests more data than can be placed in a message of the
165  * max-xmit-size for the TID specified, the server will return only the number
166  * of entries which will fit.
167  *
168  *
169  * smb_com_find_close
170  * ------------------
171  *
172  * The find close protocol is used to match the find close OS/2 system call.
173  *
174  * Whereas the first find protocol logically opens the directory, subsequent
175  * find  protocols presenting a resume_key further "read" the directory, the
176  * find close  protocol "closes" the  directory allowing the server to free any
177  * resources held in support of the directory search.
178  *
179  * In our implementation this translates to closing the odir.
180  *
181  *
182  * smb_com_find_unique
183  * -------------------
184  *
185  * The format of the find unique protocol is the same as the core "search"
186  * protocol. The difference is that the directory is logically opened, any
187  * matching entries returned, and then the directory is logically closed.
188  *
189  * The resume search key key will be returned as in the find protocol and
190  * search protocol however it may NOT be returned to continue the search.
191  * Only one buffer of entries is expected and find close need not be sent.
192  *
193  * If a find unique requests more data than can be placed in a message of the
194  * max-xmit-size for the TID specified, the server will abort the virtual
195  * circuit to the consumer.
196  */
197 
198 #define	SMB_NAME83_BUFLEN	12
199 static void smb_name83(const char *, char *, size_t);
200 
201 /* *** smb_com_search *** */
202 
203 smb_sdrc_t
204 smb_pre_search(smb_request_t *sr)
205 {
206 	DTRACE_SMB_START(op__Search, smb_request_t *, sr);
207 	return (SDRC_SUCCESS);
208 }
209 
210 void
211 smb_post_search(smb_request_t *sr)
212 {
213 	DTRACE_SMB_DONE(op__Search, smb_request_t *, sr);
214 }
215 
216 smb_sdrc_t
217 smb_com_search(smb_request_t *sr)
218 {
219 	int			rc;
220 	uint16_t		count, maxcount, index;
221 	uint16_t		sattr, odid;
222 	uint16_t		key_len;
223 	uint32_t		client_key;
224 	char			name[SMB_SHORTNAMELEN];
225 	char			name83[SMB_SHORTNAMELEN];
226 	smb_pathname_t		*pn;
227 	unsigned char		resume_char;
228 	unsigned char		type;
229 	boolean_t		find_first, to_upper;
230 	smb_tree_t		*tree;
231 	smb_odir_t		*od;
232 	smb_fileinfo_t		fileinfo;
233 	smb_odir_resume_t	odir_resume;
234 	uint32_t		status;
235 	uint16_t		eos;
236 
237 	to_upper = B_FALSE;
238 	if ((sr->session->dialect <= LANMAN1_0) ||
239 	    ((sr->smb_flg2 & SMB_FLAGS2_KNOWS_LONG_NAMES) == 0)) {
240 		to_upper = B_TRUE;
241 	}
242 
243 	/* We only handle 8.3 name here */
244 	sr->smb_flg2 &= ~SMB_FLAGS2_KNOWS_LONG_NAMES;
245 	sr->smb_flg &= ~SMB_FLAGS_CASE_INSENSITIVE;
246 
247 	if (smbsr_decode_vwv(sr, "ww", &maxcount, &sattr) != 0)
248 		return (SDRC_ERROR);
249 
250 	pn = &sr->arg.dirop.fqi.fq_path;
251 	rc = smbsr_decode_data(sr, "%Abw", sr, &pn->pn_path, &type, &key_len);
252 	if ((rc != 0) || (type != 0x05))
253 		return (SDRC_ERROR);
254 
255 	smb_pathname_init(sr, pn, pn->pn_path);
256 	if (!smb_pathname_validate(sr, pn) ||
257 	    smb_is_stream_name(pn->pn_path)) {
258 		smbsr_warn(sr, NT_STATUS_NO_MORE_FILES,
259 		    ERRDOS, ERROR_NO_MORE_FILES);
260 		return (SDRC_ERROR);
261 	}
262 
263 	tree = sr->tid_tree;
264 
265 	/* Volume information only */
266 	if ((sattr == FILE_ATTRIBUTE_VOLUME) && (key_len != 21)) {
267 		(void) memset(name, ' ', sizeof (name));
268 		(void) strncpy(name, tree->t_volume, sizeof (name));
269 
270 		if (key_len >= 21) {
271 			(void) smb_mbc_decodef(&sr->smb_data, "17.l",
272 			    &client_key);
273 		} else {
274 			client_key = 0;
275 		}
276 
277 		(void) smb_mbc_encodef(&sr->reply, "bwwbwb11c5.lb8.13c",
278 		    1, 0, VAR_BCC, 5, 0, 0, pn->pn_path+1,
279 		    client_key, sattr, name);
280 
281 		rc = (sr->reply.chain_offset - sr->cur_reply_offset) - 8;
282 		(void) smb_mbc_poke(&sr->reply, sr->cur_reply_offset, "bwwbw",
283 		    1, 1, rc+3, 5, rc);
284 
285 		return (SDRC_SUCCESS);
286 	}
287 
288 	if ((key_len != 0) && (key_len != 21))
289 		return (SDRC_ERROR);
290 
291 	find_first = (key_len == 0);
292 	resume_char = 0;
293 	client_key = 0;
294 
295 	if (find_first) {
296 		status = smb_odir_openpath(sr, pn->pn_path, sattr, 0, &od);
297 		if (status != 0) {
298 			if (status == NT_STATUS_ACCESS_DENIED)
299 				smbsr_warn(sr, NT_STATUS_NO_MORE_FILES,
300 				    ERRDOS, ERROR_NO_MORE_FILES);
301 			return (SDRC_ERROR);
302 		}
303 		odid = od->d_odid;
304 	} else {
305 		if (smb_mbc_decodef(&sr->smb_data, "b12.wwl",
306 		    &resume_char, &index, &odid, &client_key) != 0) {
307 			return (SDRC_ERROR);
308 		}
309 		od = smb_tree_lookup_odir(sr, odid);
310 	}
311 
312 	if (od == NULL) {
313 		smbsr_error(sr, NT_STATUS_INVALID_HANDLE,
314 		    ERRDOS, ERROR_INVALID_HANDLE);
315 		return (SDRC_ERROR);
316 	}
317 
318 	if (!find_first) {
319 		if ((od->d_flags & SMB_ODIR_FLAG_WILDCARDS) == 0) {
320 			od->d_eof = B_TRUE;
321 		} else {
322 			odir_resume.or_type = SMB_ODIR_RESUME_IDX;
323 			odir_resume.or_idx = index;
324 			smb_odir_resume_at(od, &odir_resume);
325 		}
326 	}
327 
328 	(void) smb_mbc_encodef(&sr->reply, "bwwbw", 1, 0, VAR_BCC, 5, 0);
329 
330 	rc = 0;
331 	index = 0;
332 	count = 0;
333 	if (maxcount > SMB_MAX_SEARCH)
334 		maxcount = SMB_MAX_SEARCH;
335 
336 	while (count < maxcount) {
337 		rc = smb_odir_read_fileinfo(sr, od, &fileinfo, &eos);
338 		if (rc != 0 || eos != 0)
339 			break;
340 
341 		if (*fileinfo.fi_shortname == '\0') {
342 			if (smb_needs_mangled(fileinfo.fi_name))
343 				continue;
344 			(void) strlcpy(fileinfo.fi_shortname, fileinfo.fi_name,
345 			    SMB_SHORTNAMELEN - 1);
346 			if (to_upper)
347 				(void) smb_strupr(fileinfo.fi_shortname);
348 		}
349 		smb_name83(fileinfo.fi_shortname, name83, SMB_SHORTNAMELEN);
350 
351 		(void) smb_mbc_encodef(&sr->reply, "b11c.wwlbYl13c",
352 		    resume_char, name83, index, odid, client_key,
353 		    fileinfo.fi_dosattr & 0xff,
354 		    smb_time_gmt_to_local(sr, fileinfo.fi_mtime.tv_sec),
355 		    (int32_t)fileinfo.fi_size,
356 		    fileinfo.fi_shortname);
357 
358 		smb_odir_save_cookie(od, index, fileinfo.fi_cookie);
359 
360 		count++;
361 		index++;
362 	}
363 	if (eos && rc == ENOENT)
364 		rc = 0;
365 
366 	if (rc != 0) {
367 		smb_odir_close(od);
368 		smb_odir_release(od);
369 		return (SDRC_ERROR);
370 	}
371 
372 	if (count == 0 && find_first) {
373 		smb_odir_close(od);
374 		smb_odir_release(od);
375 		smbsr_warn(sr, NT_STATUS_NO_MORE_FILES,
376 		    ERRDOS, ERROR_NO_MORE_FILES);
377 		return (SDRC_ERROR);
378 	}
379 
380 	rc = (sr->reply.chain_offset - sr->cur_reply_offset) - 8;
381 	if (smb_mbc_poke(&sr->reply, sr->cur_reply_offset, "bwwbw",
382 	    1, count, rc+3, 5, rc) < 0) {
383 		smb_odir_close(od);
384 		smb_odir_release(od);
385 		return (SDRC_ERROR);
386 	}
387 
388 	smb_odir_release(od);
389 	return (SDRC_SUCCESS);
390 }
391 
392 
393 /* *** smb_com_find *** */
394 
395 smb_sdrc_t
396 smb_pre_find(smb_request_t *sr)
397 {
398 	DTRACE_SMB_START(op__Find, smb_request_t *, sr);
399 	return (SDRC_SUCCESS);
400 }
401 
402 void
403 smb_post_find(smb_request_t *sr)
404 {
405 	DTRACE_SMB_DONE(op__Find, smb_request_t *, sr);
406 }
407 
408 smb_sdrc_t
409 smb_com_find(smb_request_t *sr)
410 {
411 	int			rc;
412 	uint16_t		count, maxcount, index;
413 	uint16_t		sattr, odid;
414 	uint16_t		key_len;
415 	uint32_t		client_key;
416 	char			name83[SMB_SHORTNAMELEN];
417 	smb_odir_t		*od;
418 	smb_fileinfo_t		fileinfo;
419 	uint32_t		status;
420 	uint16_t		eos;
421 
422 	smb_pathname_t		*pn;
423 	unsigned char		resume_char;
424 	unsigned char		type;
425 	boolean_t		find_first = B_TRUE;
426 	smb_odir_resume_t	odir_resume;
427 
428 	if (smbsr_decode_vwv(sr, "ww", &maxcount, &sattr) != 0)
429 		return (SDRC_ERROR);
430 
431 	pn = &sr->arg.dirop.fqi.fq_path;
432 	rc = smbsr_decode_data(sr, "%Abw", sr, &pn->pn_path, &type, &key_len);
433 	if ((rc != 0) || (type != 0x05))
434 		return (SDRC_ERROR);
435 
436 	if ((key_len != 0) && (key_len != 21))
437 		return (SDRC_ERROR);
438 
439 	smb_pathname_init(sr, pn, pn->pn_path);
440 	if (!smb_pathname_validate(sr, pn))
441 		return (SDRC_ERROR);
442 
443 	if (smb_is_stream_name(pn->pn_path)) {
444 		smbsr_error(sr, NT_STATUS_OBJECT_NAME_INVALID,
445 		    ERRDOS, ERROR_INVALID_NAME);
446 		return (SDRC_ERROR);
447 	}
448 
449 	find_first = (key_len == 0);
450 	resume_char = 0;
451 	client_key = 0;
452 
453 	if (find_first) {
454 		status = smb_odir_openpath(sr, pn->pn_path, sattr, 0, &od);
455 		if (status != 0) {
456 			smbsr_error(sr, status, 0, 0);
457 			return (SDRC_ERROR);
458 		}
459 		odid = od->d_odid;
460 	} else {
461 		if (smb_mbc_decodef(&sr->smb_data, "b12.wwl",
462 		    &resume_char, &index, &odid, &client_key) != 0) {
463 			return (SDRC_ERROR);
464 		}
465 		od = smb_tree_lookup_odir(sr, odid);
466 	}
467 
468 	if (od == NULL) {
469 		smbsr_error(sr, NT_STATUS_INVALID_HANDLE,
470 		    ERRDOS, ERROR_INVALID_HANDLE);
471 		return (SDRC_ERROR);
472 	}
473 
474 	if (!find_first) {
475 		if ((od->d_flags & SMB_ODIR_FLAG_WILDCARDS) == 0) {
476 			od->d_eof = B_TRUE;
477 		} else {
478 			odir_resume.or_type = SMB_ODIR_RESUME_IDX;
479 			odir_resume.or_idx = index;
480 			smb_odir_resume_at(od, &odir_resume);
481 		}
482 	}
483 
484 	(void) smb_mbc_encodef(&sr->reply, "bwwbw", 1, 0, VAR_BCC, 5, 0);
485 
486 	rc = 0;
487 	index = 0;
488 	count = 0;
489 	if (maxcount > SMB_MAX_SEARCH)
490 		maxcount = SMB_MAX_SEARCH;
491 
492 	while (count < maxcount) {
493 		rc = smb_odir_read_fileinfo(sr, od, &fileinfo, &eos);
494 		if (rc != 0 || eos != 0)
495 			break;
496 
497 		if (*fileinfo.fi_shortname == '\0') {
498 			if (smb_needs_mangled(fileinfo.fi_name))
499 				continue;
500 			(void) strlcpy(fileinfo.fi_shortname, fileinfo.fi_name,
501 			    SMB_SHORTNAMELEN - 1);
502 		}
503 		smb_name83(fileinfo.fi_shortname, name83, SMB_SHORTNAMELEN);
504 
505 		(void) smb_mbc_encodef(&sr->reply, "b11c.wwlbYl13c",
506 		    resume_char, name83, index, odid, client_key,
507 		    fileinfo.fi_dosattr & 0xff,
508 		    smb_time_gmt_to_local(sr, fileinfo.fi_mtime.tv_sec),
509 		    (int32_t)fileinfo.fi_size,
510 		    fileinfo.fi_shortname);
511 
512 		smb_odir_save_cookie(od, index, fileinfo.fi_cookie);
513 
514 		count++;
515 		index++;
516 	}
517 	if (eos && rc == ENOENT)
518 		rc = 0;
519 
520 	if (rc != 0) {
521 		smb_odir_close(od);
522 		smb_odir_release(od);
523 		return (SDRC_ERROR);
524 	}
525 
526 	if (count == 0 && find_first) {
527 		smb_odir_close(od);
528 		smb_odir_release(od);
529 		smbsr_warn(sr, NT_STATUS_NO_MORE_FILES,
530 		    ERRDOS, ERROR_NO_MORE_FILES);
531 		return (SDRC_ERROR);
532 	}
533 
534 	rc = (MBC_LENGTH(&sr->reply) - sr->cur_reply_offset) - 8;
535 	if (smb_mbc_poke(&sr->reply, sr->cur_reply_offset, "bwwbw",
536 	    1, count, rc+3, 5, rc) < 0) {
537 		smb_odir_close(od);
538 		smb_odir_release(od);
539 		return (SDRC_ERROR);
540 	}
541 
542 	smb_odir_release(od);
543 	return (SDRC_SUCCESS);
544 }
545 
546 
547 /* *** smb_com_find_close *** */
548 
549 smb_sdrc_t
550 smb_pre_find_close(smb_request_t *sr)
551 {
552 	DTRACE_SMB_START(op__FindClose, smb_request_t *, sr);
553 	return (SDRC_SUCCESS);
554 }
555 
556 void
557 smb_post_find_close(smb_request_t *sr)
558 {
559 	DTRACE_SMB_DONE(op__FindClose, smb_request_t *, sr);
560 }
561 
562 smb_sdrc_t
563 smb_com_find_close(smb_request_t *sr)
564 {
565 	int		rc;
566 	uint16_t	maxcount, index;
567 	uint16_t	sattr, odid;
568 	uint16_t	key_len;
569 	uint32_t	client_key;
570 	char		*path;
571 	unsigned char	resume_char;
572 	unsigned char	type;
573 	smb_odir_t	*od;
574 
575 	if (smbsr_decode_vwv(sr, "ww", &maxcount, &sattr) != 0)
576 		return (SDRC_ERROR);
577 
578 	rc = smbsr_decode_data(sr, "%Abw", sr, &path, &type, &key_len);
579 	if ((rc != 0) || (type != 0x05))
580 		return (SDRC_ERROR);
581 
582 	if (key_len == 0) {
583 		smbsr_error(sr, NT_STATUS_INVALID_HANDLE,
584 		    ERRDOS, ERROR_INVALID_HANDLE);
585 		return (SDRC_ERROR);
586 	} else if (key_len != 21) {
587 		return (SDRC_ERROR);
588 	}
589 
590 	odid = 0;
591 	if (smb_mbc_decodef(&sr->smb_data, "b12.wwl",
592 	    &resume_char, &index, &odid, &client_key) != 0) {
593 		return (SDRC_ERROR);
594 	}
595 
596 	od = smb_tree_lookup_odir(sr, odid);
597 	if (od == NULL) {
598 		smbsr_error(sr, NT_STATUS_INVALID_HANDLE,
599 		    ERRDOS, ERROR_INVALID_HANDLE);
600 		return (SDRC_ERROR);
601 	}
602 
603 	smb_odir_close(od);
604 	smb_odir_release(od);
605 
606 	if (smbsr_encode_result(sr, 1, 3, "bwwbw", 1, 0, 3, 5, 0))
607 		return (SDRC_ERROR);
608 
609 	return (SDRC_SUCCESS);
610 }
611 
612 
613 /* *** smb_com_find_unique *** */
614 
615 smb_sdrc_t
616 smb_pre_find_unique(smb_request_t *sr)
617 {
618 	DTRACE_SMB_START(op__FindUnique, smb_request_t *, sr);
619 	return (SDRC_SUCCESS);
620 }
621 
622 void
623 smb_post_find_unique(smb_request_t *sr)
624 {
625 	DTRACE_SMB_DONE(op__FindUnique, smb_request_t *, sr);
626 }
627 
628 smb_sdrc_t
629 smb_com_find_unique(struct smb_request *sr)
630 {
631 	int			rc;
632 	uint16_t		count, maxcount, index;
633 	uint16_t		sattr;
634 	smb_pathname_t		*pn;
635 	unsigned char		resume_char = '\0';
636 	uint32_t		client_key = 0;
637 	char			name83[SMB_SHORTNAMELEN];
638 	smb_odir_t		*od;
639 	smb_fileinfo_t		fileinfo;
640 	uint32_t		status;
641 	uint16_t		eos;
642 	smb_vdb_t		*vdb;
643 
644 	if (smbsr_decode_vwv(sr, "ww", &maxcount, &sattr) != 0)
645 		return (SDRC_ERROR);
646 
647 	pn = &sr->arg.dirop.fqi.fq_path;
648 	vdb = kmem_alloc(sizeof (smb_vdb_t), KM_SLEEP);
649 	if ((smbsr_decode_data(sr, "%AV", sr, &pn->pn_path, vdb) != 0) ||
650 	    (vdb->vdb_len != 0)) {
651 		kmem_free(vdb, sizeof (smb_vdb_t));
652 		return (SDRC_ERROR);
653 	}
654 	kmem_free(vdb, sizeof (smb_vdb_t));
655 
656 	smb_pathname_init(sr, pn, pn->pn_path);
657 	if (!smb_pathname_validate(sr, pn))
658 		return (SDRC_ERROR);
659 
660 	if (smb_is_stream_name(pn->pn_path)) {
661 		smbsr_error(sr, NT_STATUS_OBJECT_NAME_INVALID,
662 		    ERRDOS, ERROR_INVALID_NAME);
663 		return (SDRC_ERROR);
664 	}
665 
666 	(void) smb_mbc_encodef(&sr->reply, "bwwbw", 1, 0, VAR_BCC, 5, 0);
667 
668 	status = smb_odir_openpath(sr, pn->pn_path, sattr, 0, &od);
669 	if (status != 0) {
670 		smbsr_error(sr, status, 0, 0);
671 		return (SDRC_ERROR);
672 	}
673 	if (od == NULL)
674 		return (SDRC_ERROR);
675 
676 	rc = 0;
677 	count = 0;
678 	index = 0;
679 	if (maxcount > SMB_MAX_SEARCH)
680 		maxcount = SMB_MAX_SEARCH;
681 
682 	while (count < maxcount) {
683 		rc = smb_odir_read_fileinfo(sr, od, &fileinfo, &eos);
684 		if (rc != 0 || eos != 0)
685 			break;
686 
687 		if (*fileinfo.fi_shortname == '\0') {
688 			if (smb_needs_mangled(fileinfo.fi_name))
689 				continue;
690 			(void) strlcpy(fileinfo.fi_shortname, fileinfo.fi_name,
691 			    SMB_SHORTNAMELEN - 1);
692 		}
693 		smb_name83(fileinfo.fi_shortname, name83, SMB_SHORTNAMELEN);
694 
695 		(void) smb_mbc_encodef(&sr->reply, "b11c.wwlbYl13c",
696 		    resume_char, name83, index, od->d_odid, client_key,
697 		    fileinfo.fi_dosattr & 0xff,
698 		    smb_time_gmt_to_local(sr, fileinfo.fi_mtime.tv_sec),
699 		    (int32_t)fileinfo.fi_size,
700 		    fileinfo.fi_shortname);
701 
702 		count++;
703 		index++;
704 	}
705 	if (eos && rc == ENOENT)
706 		rc = 0;
707 
708 	smb_odir_close(od);
709 	smb_odir_release(od);
710 
711 	if (rc != 0)
712 		return (SDRC_ERROR);
713 
714 	if (count == 0) {
715 		smbsr_warn(sr, NT_STATUS_NO_MORE_FILES,
716 		    ERRDOS, ERROR_NO_MORE_FILES);
717 		return (SDRC_ERROR);
718 	}
719 
720 	rc = (MBC_LENGTH(&sr->reply) - sr->cur_reply_offset) - 8;
721 	if (smb_mbc_poke(&sr->reply, sr->cur_reply_offset,
722 	    "bwwbw", 1, count, rc+3, 5, rc) < 0) {
723 		return (SDRC_ERROR);
724 	}
725 
726 	return (SDRC_SUCCESS);
727 }
728 
729 /*
730  * smb_name83
731  *
732  * Format the filename for inclusion in the resume key. The filename
733  * returned in the resume key is 11 bytes:
734  * - up to 8 bytes of filename, space padded to 8 bytes
735  * - up to 3 bytes of ext, space padded to 3 bytes
736  *
737  * The name passed to smb_name83 should be a shortname or a name that
738  * doesn't require mangling.
739  *
740  * Examples:
741  *	"fname.txt"    -> "FNAME   TXT"
742  *	"fname.tx"     -> "FNAME   TX "
743  *	"filename"     -> "FILENAME   "
744  *	"filename.txt" -> "FILENAMETXT"
745  *	"FILE~1.TXT"   -> "FILE~1  TXT"
746  */
747 static void
748 smb_name83(const char *name, char *buf, size_t buflen)
749 {
750 	const char *p;
751 	char *pbuf;
752 	int i;
753 
754 	ASSERT(name && buf && (buflen >= SMB_NAME83_BUFLEN));
755 
756 	(void) strlcpy(buf, "           ", SMB_NAME83_BUFLEN);
757 
758 	/* Process "." and ".." up front */
759 	if ((strcmp(name, ".") == 0) || (strcmp(name, "..") == 0)) {
760 		(void) strncpy(buf, name, strlen(name));
761 		return;
762 	}
763 
764 	ASSERT(smb_needs_mangled(name) == B_FALSE);
765 
766 	/* Process basename */
767 	for (i = 0, p = name, pbuf = buf;
768 	    (i < SMB_NAME83_BASELEN) && (*p != '\0') && (*p != '.'); ++i)
769 		*pbuf++ = *p++;
770 
771 	/* Process the extension from the last dot in name */
772 	if ((p = strchr(name, '.')) != NULL) {
773 		++p;
774 		pbuf = &buf[SMB_NAME83_BASELEN];
775 		for (i = 0; (i < SMB_NAME83_EXTLEN) && (*p != '\0'); ++i)
776 			*pbuf++ = *p++;
777 	}
778 
779 	(void) smb_strupr(buf);
780 }
781