-
Notifications
You must be signed in to change notification settings - Fork 360
/
disk.c
1444 lines (1161 loc) 路 35.8 KB
/
disk.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* -*- c-basic-offset: 8 -*-
rdesktop: A Remote Desktop Protocol client.
Disk Redirection
Copyright (C) Jeroen Meijer <jeroen@oldambt7.com> 2003-2008
Copyright 2003-2011 Peter Astrand <astrand@cendio.se> for Cendio AB
Copyright 2017 Henrik Andersson <hean01@cendio.se> for Cendio AB
Copyright 2017 Karl Mikaelsson <derfian@cendio.se> for Cendio AB
Copyright 2017 Alexander Zakharov <uglym8@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "disk.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h> /* open, close */
#include <dirent.h> /* opendir, closedir, readdir */
#include <fnmatch.h>
#include <errno.h> /* errno */
#include <stdio.h>
#include <utime.h>
#include <time.h> /* ctime */
#if (defined(HAVE_DIRFD) || (HAVE_DECL_DIRFD == 1))
#define DIRFD(a) (dirfd(a))
#else
#define DIRFD(a) ((a)->DIR_FD_MEMBER_NAME)
#endif
/* TODO: Fix mntent-handling for solaris
* #include <sys/mntent.h> */
#if (defined(HAVE_MNTENT_H) && defined(HAVE_SETMNTENT))
#include <mntent.h>
#define MNTENT_PATH "/etc/mtab"
#define USE_SETMNTENT
#endif
#ifdef HAVE_SYS_VFS_H
#include <sys/vfs.h>
#endif
#ifdef HAVE_SYS_STATVFS_H
#include <sys/statvfs.h>
#endif
#ifdef HAVE_SYS_STATFS_H
#include <sys/statfs.h>
#endif
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#include "rdesktop.h"
#ifdef STAT_STATFS3_OSF1
#define STATFS_FN(path, buf) (statfs(path,buf,sizeof(buf)))
#define STATFS_T statfs
#define USE_STATFS
#endif
#ifdef STAT_STATVFS
#define STATFS_FN(path, buf) (statvfs(path,buf))
#define STATFS_T statvfs
#define USE_STATVFS
#endif
#ifdef STAT_STATVFS64
#define STATFS_FN(path, buf) (statvfs64(path,buf))
#define STATFS_T statvfs64
#define USE_STATVFS
#endif
#if (defined(STAT_STATFS2_FS_DATA) || defined(STAT_STATFS2_BSIZE) || defined(STAT_STATFS2_FSIZE))
#define STATFS_FN(path, buf) (statfs(path,buf))
#define STATFS_T statfs
#define USE_STATFS
#endif
#ifdef STAT_STATFS4
#define STATFS_FN(path, buf) (statfs(path,buf,sizeof(buf),0))
#define STATFS_T statfs
#define USE_STATFS
#endif
#if ((defined(USE_STATFS) && defined(HAVE_STRUCT_STATFS_F_NAMEMAX)) || (defined(USE_STATVFS) && defined(HAVE_STRUCT_STATVFS_F_NAMEMAX)))
#define F_NAMELEN(buf) ((buf).f_namemax)
#endif
#if ((defined(USE_STATFS) && defined(HAVE_STRUCT_STATFS_F_NAMELEN)) || (defined(USE_STATVFS) && defined(HAVE_STRUCT_STATVFS_F_NAMELEN)))
#define F_NAMELEN(buf) ((buf).f_namelen)
#endif
#ifndef F_NAMELEN
#define F_NAMELEN(buf) (255)
#endif
/* Dummy statfs fallback */
#ifndef STATFS_T
struct dummy_statfs_t
{
long f_bfree;
long f_bsize;
long f_bavail;
long f_blocks;
int f_namelen;
int f_namemax;
};
static int
dummy_statfs(struct dummy_statfs_t *buf)
{
buf->f_blocks = 262144;
buf->f_bfree = 131072;
buf->f_bavail = 131072;
buf->f_bsize = 512;
buf->f_namelen = 255;
buf->f_namemax = 255;
return 0;
}
#define STATFS_T dummy_statfs_t
#define STATFS_FN(path,buf) (dummy_statfs(buf))
#endif
extern RDPDR_DEVICE g_rdpdr_device[];
FILEINFO g_fileinfo[MAX_OPEN_FILES];
RD_BOOL g_notify_stamp = False;
typedef struct
{
char name[PATH_MAX];
char label[PATH_MAX];
unsigned long serial;
char type[PATH_MAX];
} FsInfoType;
static RD_NTSTATUS NotifyInfo(RD_NTHANDLE handle, uint32 info_class, NOTIFY * p);
static time_t
get_create_time(struct stat *filestat)
{
time_t ret, ret1;
ret = MIN(filestat->st_ctime, filestat->st_mtime);
ret1 = MIN(ret, filestat->st_atime);
if (ret1 != (time_t) 0)
return ret1;
return ret;
}
/* Convert seconds since 1970 to a filetime */
static void
seconds_since_1970_to_filetime(time_t seconds, uint32 * high, uint32 * low)
{
unsigned long long ticks;
ticks = (seconds + 11644473600LL) * 10000000;
*low = (uint32) ticks;
*high = (uint32) (ticks >> 32);
}
/* Convert seconds since 1970 back to filetime */
static time_t
convert_1970_to_filetime(uint32 high, uint32 low)
{
unsigned long long ticks;
time_t val;
ticks = low + (((unsigned long long) high) << 32);
ticks /= 10000000;
ticks -= 11644473600LL;
val = (time_t) ticks;
return (val);
}
/* A wrapper for ftruncate which supports growing files, even if the
native ftruncate doesn't. This is needed on Linux FAT filesystems,
for example. */
static int
ftruncate_growable(int fd, off_t length)
{
int ret;
off_t pos;
static const char zero = 0;
/* Try the simple method first */
if ((ret = ftruncate(fd, length)) != -1)
{
return ret;
}
/*
* Some kind of error. Perhaps we were trying to grow. Retry
* in a safe way.
*/
/* Get current position */
if ((pos = lseek(fd, 0, SEEK_CUR)) == -1)
{
logger(Disk, Error, "ftruncate_growable(), lseek() failed: %s", strerror(errno));
return -1;
}
/* Seek to new size */
if (lseek(fd, length, SEEK_SET) == -1)
{
logger(Disk, Error, "ftruncate_growable(), lseek() failed: %s", strerror(errno));
return -1;
}
/* Write a zero */
if (write(fd, &zero, 1) == -1)
{
logger(Disk, Error, "ftruncate_growable(), write() failed: %s", strerror(errno));
return -1;
}
/* Truncate. This shouldn't fail. */
if (ftruncate(fd, length) == -1)
{
logger(Disk, Error, "ftruncate_growable(), ftruncate() failed: %s",
strerror(errno));
return -1;
}
/* Restore position */
if (lseek(fd, pos, SEEK_SET) == -1)
{
logger(Disk, Error, "ftruncate_growable(), lseek() failed: %s", strerror(errno));
return -1;
}
return 0;
}
/* Just like open(2), but if a open with O_EXCL fails, retry with
GUARDED semantics. This might be necessary because some filesystems
(such as NFS filesystems mounted from a unfsd server) doesn't
support O_EXCL. GUARDED semantics are subject to race conditions,
but we can live with that.
*/
static int
open_weak_exclusive(const char *pathname, int flags, mode_t mode)
{
int ret;
struct stat filestat;
ret = open(pathname, flags, mode);
if (ret != -1 || !(flags & O_EXCL))
{
/* Success, or not using O_EXCL */
return ret;
}
/* An error occurred, and we are using O_EXCL. In case the FS
doesn't support O_EXCL, some kind of error will be
returned. Unfortunately, we don't know which one. Linux
2.6.8 seems to return 524, but I cannot find a documented
#define for this case. So, we'll return only on errors that
we know aren't related to O_EXCL. */
switch (errno)
{
case EACCES:
case EEXIST:
case EINTR:
case EISDIR:
case ELOOP:
case ENAMETOOLONG:
case ENOENT:
case ENOTDIR:
return ret;
}
/* Retry with GUARDED semantics */
if (stat(pathname, &filestat) != -1)
{
/* File exists */
errno = EEXIST;
return -1;
}
else
{
return open(pathname, flags & ~O_EXCL, mode);
}
}
/* Enumeration of devices from rdesktop.c */
/* returns number of units found and initialized. */
/* optarg looks like ':h=/mnt/floppy,b=/mnt/usbdevice1' */
/* when it arrives to this function. */
int
disk_enum_devices(uint32 * id, char *optarg)
{
char *pos = optarg;
char *pos2;
int count = 0;
DISK_DEVICE *pdisk_data;
/* skip the first colon */
optarg++;
while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)
{
pos2 = next_arg(optarg, '=');
pdisk_data = (DISK_DEVICE *) xmalloc(sizeof(DISK_DEVICE));
memset(pdisk_data, 0, sizeof(DISK_DEVICE));
strncpy(pdisk_data->name, optarg, sizeof(pdisk_data->name) - 1);
strncpy(g_rdpdr_device[*id].name, optarg, sizeof(g_rdpdr_device[*id].name) - 1);
g_rdpdr_device[*id].local_path = (char *) xmalloc(strlen(pos2) + 1);
strcpy(g_rdpdr_device[*id].local_path, pos2);
g_rdpdr_device[*id].device_type = DEVICE_TYPE_DISK;
g_rdpdr_device[*id].pdevice_data = (void *) pdisk_data;
count++;
(*id)++;
optarg = pos;
}
return count;
}
/* Opens or creates a file or directory */
static RD_NTSTATUS
disk_create(uint32 device_id, uint32 accessmask, uint32 sharemode, uint32 create_disposition,
uint32 flags_and_attributes, char *filename, RD_NTHANDLE * phandle)
{
int handle;
DIR *dirp;
int flags, mode;
char path[PATH_MAX];
struct stat filestat;
logger(Disk, Debug, "disk_create(device_id=0x%x, accessmask=0x%x, sharemode=0x%x, "
"create_disp=%d, flags=0x%x, fname=%s, ...)", device_id, accessmask,
sharemode, create_disposition, flags_and_attributes, filename);
handle = 0;
dirp = NULL;
flags = 0;
mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;
if (filename && *filename && filename[strlen(filename) - 1] == '/')
filename[strlen(filename) - 1] = 0;
sprintf(path, "%s%s", g_rdpdr_device[device_id].local_path, filename ? filename : "");
/* Protect against malicious servers:
somelongpath/.. not allowed
somelongpath/../b not allowed
somelongpath/..b in principle ok, but currently not allowed
somelongpath/b.. ok
somelongpath/b..b ok
somelongpath/b../c ok
*/
if (strstr(path, "/.."))
{
return RD_STATUS_ACCESS_DENIED;
}
switch (create_disposition)
{
case CREATE_ALWAYS:
/* Delete existing file/link. */
unlink(path);
flags |= O_CREAT;
break;
case CREATE_NEW:
/* If the file already exists, then fail. */
flags |= O_CREAT | O_EXCL;
break;
case OPEN_ALWAYS:
/* Create if not already exists. */
flags |= O_CREAT;
break;
case OPEN_EXISTING:
/* Default behaviour */
break;
case TRUNCATE_EXISTING:
/* If the file does not exist, then fail. */
flags |= O_TRUNC;
break;
}
/*printf("Open: \"%s\" flags: %X, accessmask: %X sharemode: %X create disp: %X\n", path, flags_and_attributes, accessmask, sharemode, create_disposition); */
/* Get information about file and set that flag ourselves */
if ((stat(path, &filestat) == 0) && (S_ISDIR(filestat.st_mode)))
{
if (flags_and_attributes & FILE_NON_DIRECTORY_FILE)
return RD_STATUS_FILE_IS_A_DIRECTORY;
else
flags_and_attributes |= FILE_DIRECTORY_FILE;
}
if (flags_and_attributes & FILE_DIRECTORY_FILE)
{
if (flags & O_CREAT)
{
mkdir(path, mode);
}
dirp = opendir(path);
if (!dirp)
{
switch (errno)
{
case EACCES:
return RD_STATUS_ACCESS_DENIED;
case ENOENT:
return RD_STATUS_NO_SUCH_FILE;
default:
logger(Disk, Error, "disk_create(), opendir() failed: %s",
strerror(errno));
return RD_STATUS_NO_SUCH_FILE;
}
}
handle = DIRFD(dirp);
}
else
{
if (accessmask & GENERIC_ALL
|| (accessmask & GENERIC_READ && accessmask & GENERIC_WRITE))
{
flags |= O_RDWR;
}
else if ((accessmask & GENERIC_WRITE) && !(accessmask & GENERIC_READ))
{
flags |= O_WRONLY;
}
else
{
flags |= O_RDONLY;
}
handle = open_weak_exclusive(path, flags, mode);
if (handle == -1)
{
switch (errno)
{
case EISDIR:
return RD_STATUS_FILE_IS_A_DIRECTORY;
case EACCES:
return RD_STATUS_ACCESS_DENIED;
case ENOENT:
return RD_STATUS_NO_SUCH_FILE;
case EEXIST:
return RD_STATUS_OBJECT_NAME_COLLISION;
default:
logger(Disk, Error, "disk_create(), open() failed: %s",
strerror(errno));
return RD_STATUS_NO_SUCH_FILE;
}
}
/* all read and writes of files should be non blocking */
if (fcntl(handle, F_SETFL, O_NONBLOCK) == -1)
logger(Disk, Error, "disk_create(), fcntl() failed: %s", strerror(errno));
}
if (handle >= MAX_OPEN_FILES)
{
logger(Disk, Error,
"disk_create(), handle (%d) is greater than or equal to MAX_OPEN_FILES (%d)!",
handle, MAX_OPEN_FILES);
exit(EX_SOFTWARE);
}
if (dirp)
g_fileinfo[handle].pdir = dirp;
else
g_fileinfo[handle].pdir = NULL;
g_fileinfo[handle].device_id = device_id;
g_fileinfo[handle].flags_and_attributes = flags_and_attributes;
g_fileinfo[handle].accessmask = accessmask;
strncpy(g_fileinfo[handle].path, path, PATH_MAX - 1);
g_fileinfo[handle].delete_on_close = False;
if (accessmask & GENERIC_ALL || accessmask & GENERIC_WRITE)
g_notify_stamp = True;
*phandle = handle;
return RD_STATUS_SUCCESS;
}
static RD_NTSTATUS
disk_close(RD_NTHANDLE handle)
{
struct fileinfo *pfinfo;
logger(Disk, Debug, "disk_close(handle=0x%x)", handle);
pfinfo = &(g_fileinfo[handle]);
if (pfinfo->accessmask & GENERIC_ALL || pfinfo->accessmask & GENERIC_WRITE)
g_notify_stamp = True;
rdpdr_abort_io(handle, 0, RD_STATUS_CANCELLED);
if (pfinfo->pdir)
{
if (closedir(pfinfo->pdir) < 0)
{
logger(Disk, Error, "disk_close(), closedir() failed: %s", strerror(errno));
return RD_STATUS_INVALID_HANDLE;
}
if (pfinfo->delete_on_close)
if (rmdir(pfinfo->path) < 0)
{
logger(Disk, Error, "disk_close(), rmdir() failed: %s",
strerror(errno));
return RD_STATUS_ACCESS_DENIED;
}
pfinfo->delete_on_close = False;
}
else
{
if (close(handle) < 0)
{
logger(Disk, Error, "disk_close(), close() failed: %s", strerror(errno));
return RD_STATUS_INVALID_HANDLE;
}
if (pfinfo->delete_on_close)
if (unlink(pfinfo->path) < 0)
{
logger(Disk, Error, "disk_close(), unlink() failed: %s",
strerror(errno));
return RD_STATUS_ACCESS_DENIED;
}
pfinfo->delete_on_close = False;
}
return RD_STATUS_SUCCESS;
}
static RD_NTSTATUS
disk_read(RD_NTHANDLE handle, uint8 * data, uint32 length, uint64 offset, uint32 * result)
{
int n;
#if 0
/* browsing dir ???? */
/* each request is 24 bytes */
if (g_fileinfo[handle].flags_and_attributes & FILE_DIRECTORY_FILE)
{
*result = 0;
return STATUS_SUCCESS;
}
#endif
lseek(handle, offset, SEEK_SET);
n = read(handle, data, length);
if (n < 0)
{
*result = 0;
switch (errno)
{
case EISDIR:
/* Implement 24 Byte directory read ??
with STATUS_NOT_IMPLEMENTED server doesn't read again */
/* return STATUS_FILE_IS_A_DIRECTORY; */
return RD_STATUS_NOT_IMPLEMENTED;
default:
logger(Disk, Error, "disk_read(), read failed: %s",
strerror(errno));
return RD_STATUS_INVALID_PARAMETER;
}
}
*result = n;
return RD_STATUS_SUCCESS;
}
static RD_NTSTATUS
disk_write(RD_NTHANDLE handle, uint8 * data, uint32 length, uint64 offset, uint32 * result)
{
int n;
lseek(handle, offset, SEEK_SET);
n = write(handle, data, length);
if (n < 0)
{
logger(Disk, Error, "disk_write(), write() failed: %s", strerror(errno));
*result = 0;
switch (errno)
{
case ENOSPC:
return RD_STATUS_DISK_FULL;
default:
return RD_STATUS_ACCESS_DENIED;
}
}
*result = n;
return RD_STATUS_SUCCESS;
}
/* Btw, all used Flie* structures are described in [MS-FSCC] */
RD_NTSTATUS
disk_query_information(RD_NTHANDLE handle, uint32 info_class, STREAM out)
{
uint32 file_attributes, ft_high, ft_low;
struct stat filestat;
char *path, *filename;
logger(Disk, Debug, "disk_query_information(handle=0x%x, info_class=0x%x)", handle,
info_class);
path = g_fileinfo[handle].path;
/* Get information about file */
if (fstat(handle, &filestat) != 0)
{
logger(Disk, Error, "disk_query_information(), stat() failed: %s", strerror(errno));
out_uint8(out, 0);
return RD_STATUS_ACCESS_DENIED;
}
/* Set file attributes */
file_attributes = 0;
if (S_ISDIR(filestat.st_mode))
file_attributes |= FILE_ATTRIBUTE_DIRECTORY;
filename = strrchr(path, '/');
if (filename)
filename += 1;
if (filename && filename[0] == '.')
file_attributes |= FILE_ATTRIBUTE_HIDDEN;
if (!file_attributes)
file_attributes |= FILE_ATTRIBUTE_NORMAL;
if (!(filestat.st_mode & S_IWUSR))
file_attributes |= FILE_ATTRIBUTE_READONLY;
/* Return requested data */
switch (info_class)
{
case FileBasicInformation:
seconds_since_1970_to_filetime(get_create_time(&filestat), &ft_high,
&ft_low);
out_uint32_le(out, ft_low); /* create_access_time */
out_uint32_le(out, ft_high);
seconds_since_1970_to_filetime(filestat.st_atime, &ft_high, &ft_low);
out_uint32_le(out, ft_low); /* last_access_time */
out_uint32_le(out, ft_high);
seconds_since_1970_to_filetime(filestat.st_mtime, &ft_high, &ft_low);
out_uint32_le(out, ft_low); /* last_write_time */
out_uint32_le(out, ft_high);
seconds_since_1970_to_filetime(filestat.st_ctime, &ft_high, &ft_low);
out_uint32_le(out, ft_low); /* last_change_time */
out_uint32_le(out, ft_high);
out_uint32_le(out, file_attributes);
break;
case FileStandardInformation:
out_uint64_le(out, filestat.st_size); /* Allocation size */
out_uint64_le(out, filestat.st_size); /* End of file */
out_uint32_le(out, filestat.st_nlink); /* Number of links */
out_uint8(out, 0); /* Delete pending */
out_uint8(out, S_ISDIR(filestat.st_mode) ? 1 : 0); /* Directory */
break;
case FileObjectIdInformation:
out_uint32_le(out, file_attributes); /* File Attributes */
out_uint32_le(out, 0); /* Reparse Tag */
break;
default:
logger(Disk, Warning,
"disk_query_information(), unhandled query information class 0x%x",
info_class);
return RD_STATUS_INVALID_PARAMETER;
}
return RD_STATUS_SUCCESS;
}
/* 2.2.3.3.9 [MS-RDPEFS] */
RD_NTSTATUS
disk_set_information(RD_NTHANDLE handle, uint32 info_class, STREAM in, STREAM out)
{
UNUSED(out);
uint32 length, file_attributes, ft_high, ft_low;
char *newname, fullpath[PATH_MAX];
struct fileinfo *pfinfo;
int mode;
struct stat filestat;
time_t write_time, change_time, access_time, mod_time;
struct utimbuf tvs;
struct STATFS_T stat_fs;
logger(Disk, Debug, "disk_set_information(handle=0x%x, info_class=0x%x, ...)", handle,
info_class);
pfinfo = &(g_fileinfo[handle]);
g_notify_stamp = True;
newname = NULL;
switch (info_class)
{
case FileBasicInformation:
write_time = change_time = access_time = 0;
in_uint8s(in, 4); /* length of SetBuffer */
in_uint8s(in, 24); /* padding */
/* CreationTime */
in_uint32_le(in, ft_low);
in_uint32_le(in, ft_high);
/* AccessTime */
in_uint32_le(in, ft_low);
in_uint32_le(in, ft_high);
if (ft_low || ft_high)
access_time = convert_1970_to_filetime(ft_high, ft_low);
/* WriteTime */
in_uint32_le(in, ft_low);
in_uint32_le(in, ft_high);
if (ft_low || ft_high)
write_time = convert_1970_to_filetime(ft_high, ft_low);
/* ChangeTime */
in_uint32_le(in, ft_low);
in_uint32_le(in, ft_high);
if (ft_low || ft_high)
change_time = convert_1970_to_filetime(ft_high, ft_low);
in_uint32_le(in, file_attributes);
if (fstat(handle, &filestat))
return RD_STATUS_ACCESS_DENIED;
tvs.modtime = filestat.st_mtime;
tvs.actime = filestat.st_atime;
if (access_time)
tvs.actime = access_time;
if (write_time || change_time)
mod_time = MIN(write_time, change_time);
else
mod_time = write_time ? write_time : change_time;
if (mod_time)
tvs.modtime = mod_time;
if (access_time || write_time || change_time)
{
logger(Disk, Debug,
"disk_set_information(), access time='%s', modify time='%s'",
ctime(&tvs.actime), ctime(&tvs.modtime));
if (utime(pfinfo->path, &tvs) && errno != EPERM)
return RD_STATUS_ACCESS_DENIED;
}
if (!file_attributes)
break; /* not valid */
mode = filestat.st_mode;
if (file_attributes & FILE_ATTRIBUTE_READONLY)
mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH);
else
mode |= S_IWUSR;
mode &= 0777;
logger(Disk, Debug, "disk_set_information(), access mode 0%o", mode);
if (fchmod(handle, mode))
return RD_STATUS_ACCESS_DENIED;
break;
case FileRenameInformation:
in_uint8s(in, 4); /* Handle of root dir? */
in_uint8s(in, 0x1a); /* unknown */
in_uint32_le(in, length);
if (length && (length / 2) >= 256)
return RD_STATUS_INVALID_PARAMETER;
rdp_in_unistr(in, length, &newname, &length);
if (newname == NULL)
return RD_STATUS_INVALID_PARAMETER;
convert_to_unix_filename(newname);
sprintf(fullpath, "%s%s", g_rdpdr_device[pfinfo->device_id].local_path,
newname);
free(newname);
if (rename(pfinfo->path, fullpath) != 0)
{
logger(Disk, Error, "disk_set_information(), rename() failed: %s",
strerror(errno));
return RD_STATUS_ACCESS_DENIED;
}
break;
case FileDispositionInformation:
/* As far as I understand it, the correct
thing to do here is to *schedule* a delete,
so it will be deleted when the file is
closed. Subsequent
FileDispositionInformation requests with
DeleteFile set to FALSE should unschedule
the delete. See
http://www.osronline.com/article.cfm?article=245. */
/* FileDispositionInformation always sets delete_on_close to true.
"STREAM in" includes Length(4bytes) , Padding(24bytes) and SetBuffer(zero byte).
Length is always set to zero.
[MS-RDPEFS] http://msdn.microsoft.com/en-us/library/cc241305%28PROT.10%29.aspx
- 2.2.3.3.9 Server Drive Set Information Request
*/
in_uint8s(in, 4); /* length of SetBuffer */
in_uint8s(in, 24); /* padding */
if ((pfinfo->accessmask &
(FILE_DELETE_ON_CLOSE | FILE_COMPLETE_IF_OPLOCKED)))
{
/* if file exists in directory , necessary to return RD_STATUS_DIRECTORY_NOT_EMPTY with win2008
[MS-RDPEFS] http://msdn.microsoft.com/en-us/library/cc241305%28PROT.10%29.aspx
- 2.2.3.3.9 Server Drive Set Information Request
- 2.2.3.4.9 Client Drive Set Information Response
[MS-FSCC] http://msdn.microsoft.com/en-us/library/cc231987%28PROT.10%29.aspx
- 2.4.11 FileDispositionInformation
[FSBO] http://msdn.microsoft.com/en-us/library/cc246487%28PROT.13%29.aspx
- 4.3.2 Set Delete-on-close using FileDispositionInformation Information Class (IRP_MJ_SET_INFORMATION)
*/
if (pfinfo->pdir)
{
DIR *dp = opendir(pfinfo->path);
struct dirent *dir;
while ((dir = readdir(dp)) != NULL)
{
if (strcmp(dir->d_name, ".") != 0
&& strcmp(dir->d_name, "..") != 0)
{
closedir(dp);
return RD_STATUS_DIRECTORY_NOT_EMPTY;
}
}
closedir(dp);
}
pfinfo->delete_on_close = True;
}
break;
case FileAllocationInformation:
/* Fall through to FileEndOfFileInformation,
which uses ftrunc. This is like Samba with
"strict allocation = false", and means that
we won't detect out-of-quota errors, for
example. */
case FileEndOfFileInformation:
in_uint8s(in, 28); /* unknown */
in_uint32_le(in, length); /* file size */
/* prevents start of writing if not enough space left on device */
if (STATFS_FN(pfinfo->path, &stat_fs) == 0)
if (stat_fs.f_bfree * stat_fs.f_bsize < length)
return RD_STATUS_DISK_FULL;
if (ftruncate_growable(handle, length) != 0)
{
return RD_STATUS_DISK_FULL;
}
break;
default:
logger(Disk, Warning,
"disk_set_information(), unhandled information class 0x%x",
info_class);
return RD_STATUS_INVALID_PARAMETER;
}
return RD_STATUS_SUCCESS;
}
RD_NTSTATUS
disk_check_notify(RD_NTHANDLE handle)
{
struct fileinfo *pfinfo;
RD_NTSTATUS status = RD_STATUS_PENDING;
NOTIFY notify;
logger(Disk, Debug, "disk_check_notify(handle=0x%x)", handle);
pfinfo = &(g_fileinfo[handle]);
if (!pfinfo->pdir)
return RD_STATUS_INVALID_DEVICE_REQUEST;
status = NotifyInfo(handle, pfinfo->info_class, ¬ify);
if (status != RD_STATUS_PENDING)
return status;
if (memcmp(&pfinfo->notify, ¬ify, sizeof(NOTIFY)))
{
/*printf("disk_check_notify found changed event\n"); */
memcpy(&pfinfo->notify, ¬ify, sizeof(NOTIFY));
status = RD_STATUS_NOTIFY_ENUM_DIR;
}
return status;
}
RD_NTSTATUS
disk_create_notify(RD_NTHANDLE handle, uint32 info_class)
{
struct fileinfo *pfinfo;
RD_NTSTATUS ret = RD_STATUS_PENDING;
logger(Disk, Debug, "disk_create_notify(handle=0x%x, info_class=0x%x)", handle, info_class);
pfinfo = &(g_fileinfo[handle]);
pfinfo->info_class = info_class;
ret = NotifyInfo(handle, info_class, &pfinfo->notify);
if (info_class & 0x1000)
{ /* ???? */
if (ret == RD_STATUS_PENDING)
return RD_STATUS_SUCCESS;