source: branches/samba-3.3.x/source/smbd/filename.c@ 218

Last change on this file since 218 was 206, checked in by Herwig Bauernfeind, 16 years ago

Import Samba 3.3 branch at 3.0.0 level (psmedley's port)
File size: 23.7 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 filename handling routines
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 1999-2007
6 Copyright (C) Ying Chen 2000
7 Copyright (C) Volker Lendecke 2007
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
21*/
22
23/*
24 * New hash table stat cache code added by Ying Chen.
25 */
26
27#include "includes.h"
28
29static NTSTATUS build_stream_path(TALLOC_CTX *mem_ctx,
30 connection_struct *conn,
31 const char *orig_path,
32 const char *basepath,
33 const char *streamname,
34 SMB_STRUCT_STAT *pst,
35 char **path);
36
37/****************************************************************************
38 Mangle the 2nd name and check if it is then equal to the first name.
39****************************************************************************/
40
41static bool mangled_equal(const char *name1,
42 const char *name2,
43 const struct share_params *p)
44{
45 char mname[13];
46
47 if (!name_to_8_3(name2, mname, False, p)) {
48 return False;
49 }
50 return strequal(name1, mname);
51}
52
53/****************************************************************************
54 Cope with the differing wildcard and non-wildcard error cases.
55****************************************************************************/
56
57static NTSTATUS determine_path_error(const char *name,
58 bool allow_wcard_last_component)
59{
60 const char *p;
61
62 if (!allow_wcard_last_component) {
63 /* Error code within a pathname. */
64 return NT_STATUS_OBJECT_PATH_NOT_FOUND;
65 }
66
67 /* We're terminating here so we
68 * can be a little slower and get
69 * the error code right. Windows
70 * treats the last part of the pathname
71 * separately I think, so if the last
72 * component is a wildcard then we treat
73 * this ./ as "end of component" */
74
75 p = strchr(name, '/');
76
77 if (!p && (ms_has_wild(name) || ISDOT(name))) {
78 /* Error code at the end of a pathname. */
79 return NT_STATUS_OBJECT_NAME_INVALID;
80 } else {
81 /* Error code within a pathname. */
82 return NT_STATUS_OBJECT_PATH_NOT_FOUND;
83 }
84}
85
86/****************************************************************************
87This routine is called to convert names from the dos namespace to unix
88namespace. It needs to handle any case conversions, mangling, format
89changes etc.
90
91We assume that we have already done a chdir() to the right "root" directory
92for this service.
93
94The function will return an NTSTATUS error if some part of the name except for
95the last part cannot be resolved, else NT_STATUS_OK.
96
97Note NT_STATUS_OK doesn't mean the name exists or is valid, just that we didn't
98get any fatal errors that should immediately terminate the calling
99SMB processing whilst resolving.
100
101If the saved_last_component != 0, then the unmodified last component
102of the pathname is returned there. If saved_last_component == 0 then nothing
103is returned there.
104
105If last_component_wcard is true then a MS wildcard was detected and
106should be allowed in the last component of the path only.
107
108On exit from unix_convert, if *pst was not null, then the file stat
109struct will be returned if the file exists and was found, if not this
110stat struct will be filled with zeros (and this can be detected by checking
111for nlinks = 0, which can never be true for any file).
112****************************************************************************/
113
114NTSTATUS unix_convert(TALLOC_CTX *ctx,
115 connection_struct *conn,
116 const char *orig_path,
117 bool allow_wcard_last_component,
118 char **pp_conv_path,
119 char **pp_saved_last_component,
120 SMB_STRUCT_STAT *pst)
121{
122 SMB_STRUCT_STAT st;
123 char *start, *end;
124 char *dirpath = NULL;
125 char *name = NULL;
126 char *stream = NULL;
127 bool component_was_mangled = False;
128 bool name_has_wildcard = False;
129 NTSTATUS result;
130
131 SET_STAT_INVALID(*pst);
132 *pp_conv_path = NULL;
133 if(pp_saved_last_component) {
134 *pp_saved_last_component = NULL;
135 }
136
137 if (conn->printer) {
138 /* we don't ever use the filenames on a printer share as a
139 filename - so don't convert them */
140 if (!(*pp_conv_path = talloc_strdup(ctx,orig_path))) {
141 return NT_STATUS_NO_MEMORY;
142 }
143 return NT_STATUS_OK;
144 }
145
146 DEBUG(5, ("unix_convert called on file \"%s\"\n", orig_path));
147
148 /*
149 * Conversion to basic unix format is already done in
150 * check_path_syntax().
151 */
152
153 /*
154 * Names must be relative to the root of the service - any leading /.
155 * and trailing /'s should have been trimmed by check_path_syntax().
156 */
157
158#ifdef DEVELOPER
159 SMB_ASSERT(*orig_path != '/');
160#endif
161
162 /*
163 * If we trimmed down to a single '\0' character
164 * then we should use the "." directory to avoid
165 * searching the cache, but not if we are in a
166 * printing share.
167 * As we know this is valid we can return true here.
168 */
169
170 if (!*orig_path) {
171 if (!(name = talloc_strdup(ctx,"."))) {
172 return NT_STATUS_NO_MEMORY;
173 }
174 if (SMB_VFS_STAT(conn,name,&st) == 0) {
175 *pst = st;
176 } else {
177 return map_nt_error_from_unix(errno);
178 }
179 DEBUG(5,("conversion finished \"\" -> %s\n",name));
180 goto done;
181 }
182
183 if (orig_path[0] == '.' && (orig_path[1] == '/' ||
184 orig_path[1] == '\0')) {
185 /* Start of pathname can't be "." only. */
186 if (orig_path[1] == '\0' || orig_path[2] == '\0') {
187 result = NT_STATUS_OBJECT_NAME_INVALID;
188 } else {
189 result =determine_path_error(
190 &orig_path[2], allow_wcard_last_component);
191 }
192 return result;
193 }
194
195 if (!(name = talloc_strdup(ctx, orig_path))) {
196 DEBUG(0, ("talloc_strdup failed\n"));
197 return NT_STATUS_NO_MEMORY;
198 }
199
200 /*
201 * Large directory fix normalization. If we're case sensitive, and
202 * the case preserving parameters are set to "no", normalize the case of
203 * the incoming filename from the client WHETHER IT EXISTS OR NOT !
204 * This is in conflict with the current (3.0.20) man page, but is
205 * what people expect from the "large directory howto". I'll update
206 * the man page. Thanks to jht@samba.org for finding this. JRA.
207 */
208
209 if (conn->case_sensitive && !conn->case_preserve &&
210 !conn->short_case_preserve) {
211 strnorm(name, lp_defaultcase(SNUM(conn)));
212 }
213
214 /*
215 * Ensure saved_last_component is valid even if file exists.
216 */
217
218 if(pp_saved_last_component) {
219 end = strrchr_m(name, '/');
220 if (end) {
221 *pp_saved_last_component = talloc_strdup(ctx, end + 1);
222 } else {
223 *pp_saved_last_component = talloc_strdup(ctx,
224 name);
225 }
226 }
227
228 if (!lp_posix_pathnames()) {
229 stream = strchr_m(name, ':');
230
231 if (stream != NULL) {
232 char *tmp = talloc_strdup(ctx, stream);
233 if (tmp == NULL) {
234 TALLOC_FREE(name);
235 return NT_STATUS_NO_MEMORY;
236 }
237 *stream = '\0';
238 stream = tmp;
239 }
240 }
241
242 start = name;
243
244 /* If we're providing case insentive semantics or
245 * the underlying filesystem is case insensitive,
246 * then a case-normalized hit in the stat-cache is
247 * authoratitive. JRA.
248 */
249
250 if((!conn->case_sensitive || !(conn->fs_capabilities & FILE_CASE_SENSITIVE_SEARCH)) &&
251 stat_cache_lookup(conn, &name, &dirpath, &start, &st)) {
252 *pst = st;
253 goto done;
254 }
255
256 /*
257 * Make sure "dirpath" is an allocated string, we use this for
258 * building the directories with asprintf and free it.
259 */
260
261 if ((dirpath == NULL) && (!(dirpath = talloc_strdup(ctx,"")))) {
262 DEBUG(0, ("talloc_strdup failed\n"));
263 TALLOC_FREE(name);
264 return NT_STATUS_NO_MEMORY;
265 }
266
267 /*
268 * stat the name - if it exists then we are all done!
269 */
270
271 if (SMB_VFS_STAT(conn,name,&st) == 0) {
272 /* Ensure we catch all names with in "/."
273 this is disallowed under Windows. */
274 const char *p = strstr(name, "/."); /* mb safe. */
275 if (p) {
276 if (p[2] == '/') {
277 /* Error code within a pathname. */
278 result = NT_STATUS_OBJECT_PATH_NOT_FOUND;
279 goto fail;
280 } else if (p[2] == '\0') {
281 /* Error code at the end of a pathname. */
282 result = NT_STATUS_OBJECT_NAME_INVALID;
283 goto fail;
284 }
285 }
286 stat_cache_add(orig_path, name, conn->case_sensitive);
287 DEBUG(5,("conversion finished %s -> %s\n",orig_path, name));
288 *pst = st;
289 goto done;
290 }
291
292 DEBUG(5,("unix_convert begin: name = %s, dirpath = %s, start = %s\n",
293 name, dirpath, start));
294
295 /*
296 * A special case - if we don't have any mangling chars and are case
297 * sensitive or the underlying filesystem is case insentive then searching
298 * won't help.
299 */
300
301 if ((conn->case_sensitive || !(conn->fs_capabilities & FILE_CASE_SENSITIVE_SEARCH)) &&
302 !mangle_is_mangled(name, conn->params)) {
303 goto done;
304 }
305
306 /*
307 * is_mangled() was changed to look at an entire pathname, not
308 * just a component. JRA.
309 */
310
311 if (mangle_is_mangled(start, conn->params)) {
312 component_was_mangled = True;
313 }
314
315 /*
316 * Now we need to recursively match the name against the real
317 * directory structure.
318 */
319
320 /*
321 * Match each part of the path name separately, trying the names
322 * as is first, then trying to scan the directory for matching names.
323 */
324
325 for (; start ; start = (end?end+1:(char *)NULL)) {
326 /*
327 * Pinpoint the end of this section of the filename.
328 */
329 /* mb safe. '/' can't be in any encoded char. */
330 end = strchr(start, '/');
331
332 /*
333 * Chop the name at this point.
334 */
335 if (end) {
336 *end = 0;
337 }
338
339 if (pp_saved_last_component) {
340 TALLOC_FREE(*pp_saved_last_component);
341 *pp_saved_last_component = talloc_strdup(ctx,
342 end ? end + 1 : start);
343 if (!*pp_saved_last_component) {
344 DEBUG(0, ("talloc failed\n"));
345 return NT_STATUS_NO_MEMORY;
346 }
347 }
348
349 /* The name cannot have a component of "." */
350
351 if (ISDOT(start)) {
352 if (!end) {
353 /* Error code at the end of a pathname. */
354 result = NT_STATUS_OBJECT_NAME_INVALID;
355 } else {
356 result = determine_path_error(end+1,
357 allow_wcard_last_component);
358 }
359 goto fail;
360 }
361
362 /* The name cannot have a wildcard if it's not
363 the last component. */
364
365 name_has_wildcard = ms_has_wild(start);
366
367 /* Wildcard not valid anywhere. */
368 if (name_has_wildcard && !allow_wcard_last_component) {
369 result = NT_STATUS_OBJECT_NAME_INVALID;
370 goto fail;
371 }
372
373 /* Wildcards never valid within a pathname. */
374 if (name_has_wildcard && end) {
375 result = NT_STATUS_OBJECT_NAME_INVALID;
376 goto fail;
377 }
378
379 /*
380 * Check if the name exists up to this point.
381 */
382
383 if (SMB_VFS_STAT(conn,name, &st) == 0) {
384 /*
385 * It exists. it must either be a directory or this must
386 * be the last part of the path for it to be OK.
387 */
388 if (end && !(st.st_mode & S_IFDIR)) {
389 /*
390 * An intermediate part of the name isn't
391 * a directory.
392 */
393 DEBUG(5,("Not a dir %s\n",start));
394 *end = '/';
395 /*
396 * We need to return the fact that the
397 * intermediate name resolution failed. This
398 * is used to return an error of ERRbadpath
399 * rather than ERRbadfile. Some Windows
400 * applications depend on the difference between
401 * these two errors.
402 */
403 result = NT_STATUS_OBJECT_PATH_NOT_FOUND;
404 goto fail;
405 }
406
407 if (!end) {
408 /*
409 * We just scanned for, and found the end of
410 * the path. We must return the valid stat
411 * struct. JRA.
412 */
413
414 *pst = st;
415 }
416
417 } else {
418 char *found_name = NULL;
419
420 /* Stat failed - ensure we don't use it. */
421 SET_STAT_INVALID(st);
422
423 /*
424 * Reset errno so we can detect
425 * directory open errors.
426 */
427 errno = 0;
428
429 /*
430 * Try to find this part of the path in the directory.
431 */
432
433 if (name_has_wildcard ||
434 (SMB_VFS_GET_REAL_FILENAME(
435 conn, dirpath, start,
436 talloc_tos(), &found_name) == -1)) {
437 char *unmangled;
438
439 if (end) {
440 /*
441 * An intermediate part of the name
442 * can't be found.
443 */
444 DEBUG(5,("Intermediate not found %s\n",
445 start));
446 *end = '/';
447
448 /*
449 * We need to return the fact that the
450 * intermediate name resolution failed.
451 * This is used to return an error of
452 * ERRbadpath rather than ERRbadfile.
453 * Some Windows applications depend on
454 * the difference between these two
455 * errors.
456 */
457
458 /*
459 * ENOENT, ENOTDIR and ELOOP all map
460 * to NT_STATUS_OBJECT_PATH_NOT_FOUND
461 * in the filename walk.
462 */
463
464 if (errno == ENOENT ||
465 errno == ENOTDIR ||
466 errno == ELOOP) {
467 result =
468 NT_STATUS_OBJECT_PATH_NOT_FOUND;
469 }
470 else {
471 result =
472 map_nt_error_from_unix(errno);
473 }
474 goto fail;
475 }
476
477 /* ENOENT is the only valid error here. */
478 if ((errno != 0) && (errno != ENOENT)) {
479 /*
480 * ENOTDIR and ELOOP both map to
481 * NT_STATUS_OBJECT_PATH_NOT_FOUND
482 * in the filename walk.
483 */
484 if (errno == ENOTDIR ||
485 errno == ELOOP) {
486 result =
487 NT_STATUS_OBJECT_PATH_NOT_FOUND;
488 }
489 else {
490 result =
491 map_nt_error_from_unix(errno);
492 }
493 goto fail;
494 }
495
496 /*
497 * Just the last part of the name doesn't exist.
498 * We need to strupper() or strlower() it as
499 * this conversion may be used for file creation
500 * purposes. Fix inspired by
501 * Thomas Neumann <t.neumann@iku-ag.de>.
502 */
503 if (!conn->case_preserve ||
504 (mangle_is_8_3(start, False,
505 conn->params) &&
506 !conn->short_case_preserve)) {
507 strnorm(start,
508 lp_defaultcase(SNUM(conn)));
509 }
510
511 /*
512 * check on the mangled stack to see if we can
513 * recover the base of the filename.
514 */
515
516 if (mangle_is_mangled(start, conn->params)
517 && mangle_lookup_name_from_8_3(ctx,
518 start,
519 &unmangled,
520 conn->params)) {
521 char *tmp;
522 size_t start_ofs = start - name;
523
524 if (*dirpath != '\0') {
525 tmp = talloc_asprintf(ctx,
526 "%s/%s", dirpath,
527 unmangled);
528 TALLOC_FREE(unmangled);
529 }
530 else {
531 tmp = unmangled;
532 }
533 if (tmp == NULL) {
534 DEBUG(0, ("talloc failed\n"));
535 return NT_STATUS_NO_MEMORY;
536 }
537 TALLOC_FREE(name);
538 name = tmp;
539 start = name + start_ofs;
540 end = start + strlen(start);
541 }
542
543 DEBUG(5,("New file %s\n",start));
544 goto done;
545 }
546
547
548 /*
549 * Restore the rest of the string. If the string was
550 * mangled the size may have changed.
551 */
552 if (end) {
553 char *tmp;
554 size_t start_ofs = start - name;
555
556 if (*dirpath != '\0') {
557 tmp = talloc_asprintf(ctx,
558 "%s/%s/%s", dirpath,
559 found_name, end+1);
560 }
561 else {
562 tmp = talloc_asprintf(ctx,
563 "%s/%s", found_name,
564 end+1);
565 }
566 if (tmp == NULL) {
567 DEBUG(0, ("talloc_asprintf failed\n"));
568 return NT_STATUS_NO_MEMORY;
569 }
570 TALLOC_FREE(name);
571 name = tmp;
572 start = name + start_ofs;
573 end = start + strlen(found_name);
574 *end = '\0';
575 } else {
576 char *tmp;
577 size_t start_ofs = start - name;
578
579 if (*dirpath != '\0') {
580 tmp = talloc_asprintf(ctx,
581 "%s/%s", dirpath,
582 found_name);
583 } else {
584 tmp = talloc_strdup(ctx,
585 found_name);
586 }
587 if (tmp == NULL) {
588 DEBUG(0, ("talloc failed\n"));
589 return NT_STATUS_NO_MEMORY;
590 }
591 TALLOC_FREE(name);
592 name = tmp;
593 start = name + start_ofs;
594
595 /*
596 * We just scanned for, and found the end of
597 * the path. We must return a valid stat struct
598 * if it exists. JRA.
599 */
600
601 if (SMB_VFS_STAT(conn,name, &st) == 0) {
602 *pst = st;
603 } else {
604 SET_STAT_INVALID(st);
605 }
606 }
607
608 TALLOC_FREE(found_name);
609 } /* end else */
610
611#ifdef DEVELOPER
612 /*
613 * This sucks!
614 * We should never provide different behaviors
615 * depending on DEVELOPER!!!
616 */
617 if (VALID_STAT(st)) {
618 bool delete_pending;
619 get_file_infos(vfs_file_id_from_sbuf(conn, &st),
620 &delete_pending, NULL);
621 if (delete_pending) {
622 result = NT_STATUS_DELETE_PENDING;
623 goto fail;
624 }
625 }
626#endif
627
628 /*
629 * Add to the dirpath that we have resolved so far.
630 */
631
632 if (*dirpath != '\0') {
633 char *tmp = talloc_asprintf(ctx,
634 "%s/%s", dirpath, start);
635 if (!tmp) {
636 DEBUG(0, ("talloc_asprintf failed\n"));
637 return NT_STATUS_NO_MEMORY;
638 }
639 TALLOC_FREE(dirpath);
640 dirpath = tmp;
641 }
642 else {
643 TALLOC_FREE(dirpath);
644 if (!(dirpath = talloc_strdup(ctx,start))) {
645 DEBUG(0, ("talloc_strdup failed\n"));
646 return NT_STATUS_NO_MEMORY;
647 }
648 }
649
650 /*
651 * Don't cache a name with mangled or wildcard components
652 * as this can change the size.
653 */
654
655 if(!component_was_mangled && !name_has_wildcard) {
656 stat_cache_add(orig_path, dirpath,
657 conn->case_sensitive);
658 }
659
660 /*
661 * Restore the / that we wiped out earlier.
662 */
663 if (end) {
664 *end = '/';
665 }
666 }
667
668 /*
669 * Don't cache a name with mangled or wildcard components
670 * as this can change the size.
671 */
672
673 if(!component_was_mangled && !name_has_wildcard) {
674 stat_cache_add(orig_path, name, conn->case_sensitive);
675 }
676
677 /*
678 * The name has been resolved.
679 */
680
681 DEBUG(5,("conversion finished %s -> %s\n",orig_path, name));
682
683 done:
684 if (stream != NULL) {
685 char *tmp = NULL;
686
687 result = build_stream_path(ctx, conn, orig_path, name, stream,
688 pst, &tmp);
689 if (!NT_STATUS_IS_OK(result)) {
690 goto fail;
691 }
692
693 DEBUG(10, ("build_stream_path returned %s\n", tmp));
694
695 TALLOC_FREE(name);
696 name = tmp;
697 }
698 *pp_conv_path = name;
699 TALLOC_FREE(dirpath);
700 return NT_STATUS_OK;
701 fail:
702 DEBUG(10, ("dirpath = [%s] start = [%s]\n", dirpath, start));
703 if (*dirpath != '\0') {
704 *pp_conv_path = talloc_asprintf(ctx,
705 "%s/%s", dirpath, start);
706 } else {
707 *pp_conv_path = talloc_strdup(ctx, start);
708 }
709 if (!*pp_conv_path) {
710 DEBUG(0, ("talloc_asprintf failed\n"));
711 return NT_STATUS_NO_MEMORY;
712 }
713 TALLOC_FREE(name);
714 TALLOC_FREE(dirpath);
715 return result;
716}
717
718/****************************************************************************
719 Check a filename - possibly calling check_reduced_name.
720 This is called by every routine before it allows an operation on a filename.
721 It does any final confirmation necessary to ensure that the filename is
722 a valid one for the user to access.
723****************************************************************************/
724
725NTSTATUS check_name(connection_struct *conn, const char *name)
726{
727 if (IS_VETO_PATH(conn, name)) {
728 /* Is it not dot or dot dot. */
729 if (!((name[0] == '.') && (!name[1] ||
730 (name[1] == '.' && !name[2])))) {
731 DEBUG(5,("check_name: file path name %s vetoed\n",
732 name));
733 return map_nt_error_from_unix(ENOENT);
734 }
735 }
736
737 if (!lp_widelinks(SNUM(conn)) || !lp_symlinks(SNUM(conn))) {
738 NTSTATUS status = check_reduced_name(conn,name);
739 if (!NT_STATUS_IS_OK(status)) {
740 DEBUG(5,("check_name: name %s failed with %s\n",name,
741 nt_errstr(status)));
742 return status;
743 }
744 }
745
746 return NT_STATUS_OK;
747}
748
749/****************************************************************************
750 Check if two filenames are equal.
751 This needs to be careful about whether we are case sensitive.
752****************************************************************************/
753
754static bool fname_equal(const char *name1, const char *name2,
755 bool case_sensitive)
756{
757 /* Normal filename handling */
758 if (case_sensitive) {
759 return(strcmp(name1,name2) == 0);
760 }
761
762 return(strequal(name1,name2));
763}
764
765/****************************************************************************
766 Scan a directory to find a filename, matching without case sensitivity.
767 If the name looks like a mangled name then try via the mangling functions
768****************************************************************************/
769
770int get_real_filename(connection_struct *conn, const char *path,
771 const char *name, TALLOC_CTX *mem_ctx,
772 char **found_name)
773{
774 struct smb_Dir *cur_dir;
775 const char *dname;
776 bool mangled;
777 char *unmangled_name = NULL;
778 long curpos;
779
780 mangled = mangle_is_mangled(name, conn->params);
781
782 /* handle null paths */
783 if ((path == NULL) || (*path == 0)) {
784 path = ".";
785 }
786
787 /* If we have a case-sensitive filesystem, it doesn't do us any
788 * good to search for a name. If a case variation of the name was
789 * there, then the original stat(2) would have found it.
790 */
791 if (!mangled && !(conn->fs_capabilities & FILE_CASE_SENSITIVE_SEARCH)) {
792 errno = ENOENT;
793 return -1;
794 }
795
796 /*
797 * The incoming name can be mangled, and if we de-mangle it
798 * here it will not compare correctly against the filename (name2)
799 * read from the directory and then mangled by the name_to_8_3()
800 * call. We need to mangle both names or neither.
801 * (JRA).
802 *
803 * Fix for bug found by Dina Fine. If in case sensitive mode then
804 * the mangle cache is no good (3 letter extension could be wrong
805 * case - so don't demangle in this case - leave as mangled and
806 * allow the mangling of the directory entry read (which is done
807 * case insensitively) to match instead. This will lead to more
808 * false positive matches but we fail completely without it. JRA.
809 */
810
811 if (mangled && !conn->case_sensitive) {
812 mangled = !mangle_lookup_name_from_8_3(talloc_tos(), name,
813 &unmangled_name,
814 conn->params);
815 if (!mangled) {
816 /* Name is now unmangled. */
817 name = unmangled_name;
818 }
819 }
820
821 /* open the directory */
822 if (!(cur_dir = OpenDir(talloc_tos(), conn, path, NULL, 0))) {
823 DEBUG(3,("scan dir didn't open dir [%s]\n",path));
824 TALLOC_FREE(unmangled_name);
825 return -1;
826 }
827
828 /* now scan for matching names */
829 curpos = 0;
830 while ((dname = ReadDirName(cur_dir, &curpos))) {
831
832 /* Is it dot or dot dot. */
833 if (ISDOT(dname) || ISDOTDOT(dname)) {
834 continue;
835 }
836
837 /*
838 * At this point dname is the unmangled name.
839 * name is either mangled or not, depending on the state
840 * of the "mangled" variable. JRA.
841 */
842
843 /*
844 * Check mangled name against mangled name, or unmangled name
845 * against unmangled name.
846 */
847
848 if ((mangled && mangled_equal(name,dname,conn->params)) ||
849 fname_equal(name, dname, conn->case_sensitive)) {
850 /* we've found the file, change it's name and return */
851 *found_name = talloc_strdup(mem_ctx, dname);
852 TALLOC_FREE(unmangled_name);
853 TALLOC_FREE(cur_dir);
854 if (!*found_name) {
855 errno = ENOMEM;
856 return -1;
857 }
858 return 0;
859 }
860 }
861
862 TALLOC_FREE(unmangled_name);
863 TALLOC_FREE(cur_dir);
864 errno = ENOENT;
865 return -1;
866}
867
868static NTSTATUS build_stream_path(TALLOC_CTX *mem_ctx,
869 connection_struct *conn,
870 const char *orig_path,
871 const char *basepath,
872 const char *streamname,
873 SMB_STRUCT_STAT *pst,
874 char **path)
875{
876 SMB_STRUCT_STAT st;
877 char *result = NULL;
878 NTSTATUS status;
879 unsigned int i, num_streams;
880 struct stream_struct *streams = NULL;
881
882 result = talloc_asprintf(mem_ctx, "%s%s", basepath, streamname);
883 if (result == NULL) {
884 return NT_STATUS_NO_MEMORY;
885 }
886
887 if (SMB_VFS_STAT(conn, result, &st) == 0) {
888 *pst = st;
889 *path = result;
890 return NT_STATUS_OK;
891 }
892
893 if (errno != ENOENT) {
894 status = map_nt_error_from_unix(errno);
895 DEBUG(10, ("vfs_stat failed: %s\n", nt_errstr(status)));
896 goto fail;
897 }
898
899 status = SMB_VFS_STREAMINFO(conn, NULL, basepath, mem_ctx,
900 &num_streams, &streams);
901
902 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
903 SET_STAT_INVALID(*pst);
904 *path = result;
905 return NT_STATUS_OK;
906 }
907
908 if (!NT_STATUS_IS_OK(status)) {
909 DEBUG(10, ("vfs_streaminfo failed: %s\n", nt_errstr(status)));
910 goto fail;
911 }
912
913 for (i=0; i<num_streams; i++) {
914 DEBUG(10, ("comparing [%s] and [%s]: ",
915 streamname, streams[i].name));
916 if (fname_equal(streamname, streams[i].name,
917 conn->case_sensitive)) {
918 DEBUGADD(10, ("equal\n"));
919 break;
920 }
921 DEBUGADD(10, ("not equal\n"));
922 }
923
924 if (i == num_streams) {
925 SET_STAT_INVALID(*pst);
926 *path = result;
927 TALLOC_FREE(streams);
928 return NT_STATUS_OK;
929 }
930
931 TALLOC_FREE(result);
932
933 result = talloc_asprintf(mem_ctx, "%s%s", basepath, streams[i].name);
934 if (result == NULL) {
935 status = NT_STATUS_NO_MEMORY;
936 goto fail;
937 }
938
939 SET_STAT_INVALID(*pst);
940
941 if (SMB_VFS_STAT(conn, result, pst) == 0) {
942 stat_cache_add(orig_path, result, conn->case_sensitive);
943 }
944
945 *path = result;
946 TALLOC_FREE(streams);
947 return NT_STATUS_OK;
948
949 fail:
950 TALLOC_FREE(result);
951 TALLOC_FREE(streams);
952 return status;
953}
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