disk.c@ 24302

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1	/* -- c-basic-offset: 8 --
2	rdesktop: A Remote Desktop Protocol client.
3	Disk Redirection
4	Copyright (C) Jeroen Meijer 2003-2007
5
6	This program is free software; you can redistribute it and/or modify
7	it under the terms of the GNU General Public License as published by
8	the Free Software Foundation; either version 2 of the License, or
9	(at your option) any later version.
10
11	This program is distributed in the hope that it will be useful,
12	but WITHOUT ANY WARRANTY; without even the implied warranty of
13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	GNU General Public License for more details.
15
16	You should have received a copy of the GNU General Public License
17	along with this program; if not, write to the Free Software
18	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19	*/
20
21	/*
22	* Sun GPL Disclaimer: For the avoidance of doubt, except that if any license choice
23	* other than GPL or LGPL is available it will apply instead, Sun elects to use only
24	* the General Public License version 2 (GPLv2) at this time for any software where
25	* a choice of GPL license versions is made available with the language indicating
26	* that GPLv2 or any later version may be used, or where a choice of which version
27	* of the GPL is applied is otherwise unspecified.
28	*/
29
30	#include "disk.h"
31
32	#include <sys/types.h>
33	#include <sys/stat.h>
34	#include <unistd.h>
35	#include <fcntl.h> /* open, close */
36	#include <dirent.h> /* opendir, closedir, readdir */
37	#include <fnmatch.h>
38	#include <errno.h> /* errno */
39	#include <stdio.h>
40
41	#include <utime.h>
42	#include <time.h> /* ctime */
43
44	#if (defined(HAVE_DIRFD) \|\| (HAVE_DECL_DIRFD == 1))
45	#define DIRFD(a) (dirfd(a))
46	#else
47	#define DIRFD(a) ((a)->DIR_FD_MEMBER_NAME)
48	#endif
49
50	/* TODO: Fix mntent-handling for solaris
51	* #include <sys/mntent.h> */
52	#if (defined(HAVE_MNTENT_H) && defined(HAVE_SETMNTENT))
53	#include <mntent.h>
54	#define MNTENT_PATH "/etc/mtab"
55	#define USE_SETMNTENT
56	#endif
57
58	#ifdef HAVE_SYS_VFS_H
59	#include <sys/vfs.h>
60	#endif
61
62	#ifdef HAVE_SYS_STATVFS_H
63	#include <sys/statvfs.h>
64	#endif
65
66	#ifdef HAVE_SYS_STATFS_H
67	#include <sys/statfs.h>
68	#endif
69
70	#ifdef HAVE_SYS_PARAM_H
71	#include <sys/param.h>
72	#endif
73
74	#ifdef HAVE_SYS_MOUNT_H
75	#include <sys/mount.h>
76	#endif
77
78	#include "rdesktop.h"
79
80	#ifdef STAT_STATFS3_OSF1
81	#define STATFS_FN(path, buf) (statfs(path,buf,sizeof(buf)))
82	#define STATFS_T statfs
83	#define USE_STATFS
84	#endif
85
86	#ifdef STAT_STATVFS
87	#define STATFS_FN(path, buf) (statvfs(path,buf))
88	#define STATFS_T statvfs
89	#define USE_STATVFS
90	#endif
91
92	#ifdef STAT_STATVFS64
93	#define STATFS_FN(path, buf) (statvfs64(path,buf))
94	#define STATFS_T statvfs64
95	#define USE_STATVFS
96	#endif
97
98	#if (defined(STAT_STATFS2_FS_DATA) \|\| defined(STAT_STATFS2_BSIZE) \|\| defined(STAT_STATFS2_FSIZE))
99	#define STATFS_FN(path, buf) (statfs(path,buf))
100	#define STATFS_T statfs
101	#define USE_STATFS
102	#endif
103
104	#ifdef STAT_STATFS4
105	#define STATFS_FN(path, buf) (statfs(path,buf,sizeof(buf),0))
106	#define STATFS_T statfs
107	#define USE_STATFS
108	#endif
109
110	#if ((defined(USE_STATFS) && defined(HAVE_STRUCT_STATFS_F_NAMEMAX)) \|\| (defined(USE_STATVFS) && defined(HAVE_STRUCT_STATVFS_F_NAMEMAX)))
111	#define F_NAMELEN(buf) ((buf).f_namemax)
112	#endif
113
114	#if ((defined(USE_STATFS) && defined(HAVE_STRUCT_STATFS_F_NAMELEN)) \|\| (defined(USE_STATVFS) && defined(HAVE_STRUCT_STATVFS_F_NAMELEN)))
115	#define F_NAMELEN(buf) ((buf).f_namelen)
116	#endif
117
118	#ifndef F_NAMELEN
119	#define F_NAMELEN(buf) (255)
120	#endif
121
122	/* Dummy statfs fallback */
123	#ifndef STATFS_T
124	struct dummy_statfs_t
125	{
126	long f_bfree;
127	long f_bsize;
128	long f_blocks;
129	int f_namelen;
130	int f_namemax;
131	};
132
133	static int
134	dummy_statfs(struct dummy_statfs_t *buf)
135	{
136	buf->f_blocks = 262144;
137	buf->f_bfree = 131072;
138	buf->f_bsize = 512;
139	buf->f_namelen = 255;
140	buf->f_namemax = 255;
141
142	return 0;
143	}
144
145	#define STATFS_T dummy_statfs_t
146	#define STATFS_FN(path,buf) (dummy_statfs(buf))
147	#endif
148
149	extern RDPDR_DEVICE g_rdpdr_device[];
150
151	FILEINFO g_fileinfo[MAX_OPEN_FILES];
152	RD_BOOL g_notify_stamp = False;
153
154	typedef struct
155	{
156	char name[PATH_MAX];
157	char label[PATH_MAX];
158	unsigned long serial;
159	char type[PATH_MAX];
160	} FsInfoType;
161
162	static RD_NTSTATUS NotifyInfo(RD_NTHANDLE handle, uint32 info_class, NOTIFY * p);
163
164	static time_t
165	get_create_time(struct stat *filestat)
166	{
167	time_t ret, ret1;
168
169	ret = MIN(filestat->st_ctime, filestat->st_mtime);
170	ret1 = MIN(ret, filestat->st_atime);
171
172	if (ret1 != (time_t) 0)
173	return ret1;
174
175	return ret;
176	}
177
178	/* Convert seconds since 1970 to a filetime */
179	static void
180	seconds_since_1970_to_filetime(time_t seconds, uint32 * high, uint32 * low)
181	{
182	unsigned long long ticks;
183
184	ticks = (seconds + 11644473600LL) * 10000000;
185	*low = (uint32) ticks;
186	*high = (uint32) (ticks >> 32);
187	}
188
189	/* Convert seconds since 1970 back to filetime */
190	static time_t
191	convert_1970_to_filetime(uint32 high, uint32 low)
192	{
193	unsigned long long ticks;
194	time_t val;
195
196	ticks = low + (((unsigned long long) high) << 32);
197	ticks /= 10000000;
198	ticks -= 11644473600LL;
199
200	val = (time_t) ticks;
201	return (val);
202
203	}
204
205	/* A wrapper for ftruncate which supports growing files, even if the
206	native ftruncate doesn't. This is needed on Linux FAT filesystems,
207	for example. */
208	static int
209	ftruncate_growable(int fd, off_t length)
210	{
211	int ret;
212	off_t pos;
213	static const char zero = 0;
214
215	/* Try the simple method first */
216	if ((ret = ftruncate(fd, length)) != -1)
217	{
218	return ret;
219	}
220
221	/*
222	* Some kind of error. Perhaps we were trying to grow. Retry
223	* in a safe way.
224	*/
225
226	/* Get current position */
227	if ((pos = lseek(fd, 0, SEEK_CUR)) == -1)
228	{
229	perror("lseek");
230	return -1;
231	}
232
233	/* Seek to new size */
234	if (lseek(fd, length, SEEK_SET) == -1)
235	{
236	perror("lseek");
237	return -1;
238	}
239
240	/* Write a zero */
241	if (write(fd, &zero, 1) == -1)
242	{
243	perror("write");
244	return -1;
245	}
246
247	/* Truncate. This shouldn't fail. */
248	if (ftruncate(fd, length) == -1)
249	{
250	perror("ftruncate");
251	return -1;
252	}
253
254	/* Restore position */
255	if (lseek(fd, pos, SEEK_SET) == -1)
256	{
257	perror("lseek");
258	return -1;
259	}
260
261	return 0;
262	}
263
264	/* Just like open(2), but if a open with O_EXCL fails, retry with
265	GUARDED semantics. This might be necessary because some filesystems
266	(such as NFS filesystems mounted from a unfsd server) doesn't
267	support O_EXCL. GUARDED semantics are subject to race conditions,
268	but we can live with that.
269	*/
270	static int
271	open_weak_exclusive(const char *pathname, int flags, mode_t mode)
272	{
273	int ret;
274	struct stat filestat;
275
276	ret = open(pathname, flags, mode);
277	if (ret != -1 \|\| !(flags & O_EXCL))
278	{
279	/* Success, or not using O_EXCL */
280	return ret;
281	}
282
283	/* An error occured, and we are using O_EXCL. In case the FS
284	doesn't support O_EXCL, some kind of error will be
285	returned. Unfortunately, we don't know which one. Linux
286	2.6.8 seems to return 524, but I cannot find a documented
287	#define for this case. So, we'll return only on errors that
288	we know aren't related to O_EXCL. */
289	switch (errno)
290	{
291	case EACCES:
292	case EEXIST:
293	case EINTR:
294	case EISDIR:
295	case ELOOP:
296	case ENAMETOOLONG:
297	case ENOENT:
298	case ENOTDIR:
299	return ret;
300	}
301
302	/* Retry with GUARDED semantics */
303	if (stat(pathname, &filestat) != -1)
304	{
305	/* File exists */
306	errno = EEXIST;
307	return -1;
308	}
309	else
310	{
311	return open(pathname, flags & ~O_EXCL, mode);
312	}
313	}
314
315	/* Enumeration of devices from rdesktop.c */
316	/* returns numer of units found and initialized. */
317	/* optarg looks like ':h=/mnt/floppy,b=/mnt/usbdevice1' */
318	/* when it arrives to this function. */
319	int
320	disk_enum_devices(uint32 * id, char *optarg)
321	{
322	char *pos = optarg;
323	char *pos2;
324	int count = 0;
325
326	/* skip the first colon */
327	optarg++;
328	while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)
329	{
330	pos2 = next_arg(optarg, '=');
331
332	strncpy(g_rdpdr_device[id].name, optarg, sizeof(g_rdpdr_device[id].name) - 1);
333	if (strlen(optarg) > (sizeof(g_rdpdr_device[*id].name) - 1))
334	fprintf(stderr, "share name %s truncated to %s\n", optarg,
335	g_rdpdr_device[*id].name);
336
337	g_rdpdr_device[id].local_path = (char ) xmalloc(strlen(pos2) + 1);
338	strcpy(g_rdpdr_device[*id].local_path, pos2);
339	g_rdpdr_device[*id].device_type = DEVICE_TYPE_DISK;
340	count++;
341	(*id)++;
342
343	optarg = pos;
344	}
345	return count;
346	}
347
348	/* Opens or creates a file or directory */
349	static RD_NTSTATUS
350	disk_create(uint32 device_id, uint32 accessmask, uint32 sharemode, uint32 create_disposition,
351	uint32 flags_and_attributes, char filename, RD_NTHANDLE phandle)
352	{
353	RD_NTHANDLE handle;
354	DIR *dirp;
355	int flags, mode;
356	char path[PATH_MAX];
357	struct stat filestat;
358
359	handle = 0;
360	dirp = NULL;
361	flags = 0;
362	mode = S_IRWXU \| S_IRGRP \| S_IXGRP \| S_IROTH \| S_IXOTH;
363
364	if (*filename && filename[strlen(filename) - 1] == '/')
365	filename[strlen(filename) - 1] = 0;
366	sprintf(path, "%s%s", g_rdpdr_device[device_id].local_path, filename);
367
368	switch (create_disposition)
369	{
370	case CREATE_ALWAYS:
371
372	/* Delete existing file/link. */
373	unlink(path);
374	flags \|= O_CREAT;
375	break;
376
377	case CREATE_NEW:
378
379	/* If the file already exists, then fail. */
380	flags \|= O_CREAT \| O_EXCL;
381	break;
382
383	case OPEN_ALWAYS:
384
385	/* Create if not already exists. */
386	flags \|= O_CREAT;
387	break;
388
389	case OPEN_EXISTING:
390
391	/* Default behaviour */
392	break;
393
394	case TRUNCATE_EXISTING:
395
396	/* If the file does not exist, then fail. */
397	flags \|= O_TRUNC;
398	break;
399	}
400
401	/printf("Open: \"%s\" flags: %X, accessmask: %X sharemode: %X create disp: %X\n", path, flags_and_attributes, accessmask, sharemode, create_disposition); /
402
403	/* Get information about file and set that flag ourselfs */
404	if ((stat(path, &filestat) == 0) && (S_ISDIR(filestat.st_mode)))
405	{
406	if (flags_and_attributes & FILE_NON_DIRECTORY_FILE)
407	return RD_STATUS_FILE_IS_A_DIRECTORY;
408	else
409	flags_and_attributes \|= FILE_DIRECTORY_FILE;
410	}
411
412	if (flags_and_attributes & FILE_DIRECTORY_FILE)
413	{
414	if (flags & O_CREAT)
415	{
416	mkdir(path, mode);
417	}
418
419	dirp = opendir(path);
420	if (!dirp)
421	{
422	switch (errno)
423	{
424	case EACCES:
425
426	return RD_STATUS_ACCESS_DENIED;
427
428	case ENOENT:
429
430	return RD_STATUS_NO_SUCH_FILE;
431
432	default:
433
434	perror("opendir");
435	return RD_STATUS_NO_SUCH_FILE;
436	}
437	}
438	handle = DIRFD(dirp);
439	}
440	else
441	{
442
443	if (accessmask & GENERIC_ALL
444	\|\| (accessmask & GENERIC_READ && accessmask & GENERIC_WRITE))
445	{
446	flags \|= O_RDWR;
447	}
448	else if ((accessmask & GENERIC_WRITE) && !(accessmask & GENERIC_READ))
449	{
450	flags \|= O_WRONLY;
451	}
452	else
453	{
454	flags \|= O_RDONLY;
455	}
456
457	handle = open_weak_exclusive(path, flags, mode);
458	if (handle == -1)
459	{
460	switch (errno)
461	{
462	case EISDIR:
463
464	return RD_STATUS_FILE_IS_A_DIRECTORY;
465
466	case EACCES:
467
468	return RD_STATUS_ACCESS_DENIED;
469
470	case ENOENT:
471
472	return RD_STATUS_NO_SUCH_FILE;
473	case EEXIST:
474
475	return RD_STATUS_OBJECT_NAME_COLLISION;
476	default:
477
478	perror("open");
479	return RD_STATUS_NO_SUCH_FILE;
480	}
481	}
482
483	/* all read and writes of files should be non blocking */
484	if (fcntl(handle, F_SETFL, O_NONBLOCK) == -1)
485	perror("fcntl");
486	}
487
488	if (handle >= MAX_OPEN_FILES)
489	{
490	error("Maximum number of open files (%s) reached. Increase MAX_OPEN_FILES!\n",
491	handle);
492	exit(1);
493	}
494
495	if (dirp)
496	g_fileinfo[handle].pdir = dirp;
497	else
498	g_fileinfo[handle].pdir = NULL;
499
500	g_fileinfo[handle].device_id = device_id;
501	g_fileinfo[handle].flags_and_attributes = flags_and_attributes;
502	g_fileinfo[handle].accessmask = accessmask;
503	strncpy(g_fileinfo[handle].path, path, PATH_MAX - 1);
504	g_fileinfo[handle].delete_on_close = False;
505
506	if (accessmask & GENERIC_ALL \|\| accessmask & GENERIC_WRITE)
507	g_notify_stamp = True;
508
509	*phandle = handle;
510	return RD_STATUS_SUCCESS;
511	}
512
513	static RD_NTSTATUS
514	disk_close(RD_NTHANDLE handle)
515	{
516	struct fileinfo *pfinfo;
517
518	pfinfo = &(g_fileinfo[handle]);
519
520	if (pfinfo->accessmask & GENERIC_ALL \|\| pfinfo->accessmask & GENERIC_WRITE)
521	g_notify_stamp = True;
522
523	rdpdr_abort_io(handle, 0, RD_STATUS_CANCELLED);
524
525	if (pfinfo->pdir)
526	{
527	if (closedir(pfinfo->pdir) < 0)
528	{
529	perror("closedir");
530	return RD_STATUS_INVALID_HANDLE;
531	}
532
533	if (pfinfo->delete_on_close)
534	if (rmdir(pfinfo->path) < 0)
535	{
536	perror(pfinfo->path);
537	return RD_STATUS_ACCESS_DENIED;
538	}
539	pfinfo->delete_on_close = False;
540	}
541	else
542	{
543	if (close(handle) < 0)
544	{
545	perror("close");
546	return RD_STATUS_INVALID_HANDLE;
547	}
548	if (pfinfo->delete_on_close)
549	if (unlink(pfinfo->path) < 0)
550	{
551	perror(pfinfo->path);
552	return RD_STATUS_ACCESS_DENIED;
553	}
554
555	pfinfo->delete_on_close = False;
556	}
557
558	return RD_STATUS_SUCCESS;
559	}
560
561	static RD_NTSTATUS
562	disk_read(RD_NTHANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
563	{
564	int n;
565
566	#if 0
567	/* browsing dir ???? */
568	/* each request is 24 bytes */
569	if (g_fileinfo[handle].flags_and_attributes & FILE_DIRECTORY_FILE)
570	{
571	*result = 0;
572	return STATUS_SUCCESS;
573	}
574	#endif
575
576	lseek(handle, offset, SEEK_SET);
577
578	n = read(handle, data, length);
579
580	if (n < 0)
581	{
582	*result = 0;
583	switch (errno)
584	{
585	case EISDIR:
586	/* Implement 24 Byte directory read ??
587	with STATUS_NOT_IMPLEMENTED server doesn't read again */
588	/* return STATUS_FILE_IS_A_DIRECTORY; */
589	return RD_STATUS_NOT_IMPLEMENTED;
590	default:
591	perror("read");
592	return RD_STATUS_INVALID_PARAMETER;
593	}
594	}
595
596	*result = n;
597
598	return RD_STATUS_SUCCESS;
599	}
600
601	static RD_NTSTATUS
602	disk_write(RD_NTHANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
603	{
604	int n;
605
606	lseek(handle, offset, SEEK_SET);
607
608	n = write(handle, data, length);
609
610	if (n < 0)
611	{
612	perror("write");
613	*result = 0;
614	switch (errno)
615	{
616	case ENOSPC:
617	return RD_STATUS_DISK_FULL;
618	default:
619	return RD_STATUS_ACCESS_DENIED;
620	}
621	}
622
623	*result = n;
624
625	return RD_STATUS_SUCCESS;
626	}
627
628	RD_NTSTATUS
629	disk_query_information(RD_NTHANDLE handle, uint32 info_class, STREAM out)
630	{
631	uint32 file_attributes, ft_high, ft_low;
632	struct stat filestat;
633	char path, filename;
634
635	path = g_fileinfo[handle].path;
636
637	/* Get information about file */
638	if (fstat(handle, &filestat) != 0)
639	{
640	perror("stat");
641	out_uint8(out, 0);
642	return RD_STATUS_ACCESS_DENIED;
643	}
644
645	/* Set file attributes */
646	file_attributes = 0;
647	if (S_ISDIR(filestat.st_mode))
648	file_attributes \|= FILE_ATTRIBUTE_DIRECTORY;
649
650	filename = 1 + strrchr(path, '/');
651	if (filename && filename[0] == '.')
652	file_attributes \|= FILE_ATTRIBUTE_HIDDEN;
653
654	if (!file_attributes)
655	file_attributes \|= FILE_ATTRIBUTE_NORMAL;
656
657	if (!(filestat.st_mode & S_IWUSR))
658	file_attributes \|= FILE_ATTRIBUTE_READONLY;
659
660	/* Return requested data */
661	switch (info_class)
662	{
663	case FileBasicInformation:
664	seconds_since_1970_to_filetime(get_create_time(&filestat), &ft_high,
665	&ft_low);
666	out_uint32_le(out, ft_low); /* create_access_time */
667	out_uint32_le(out, ft_high);
668
669	seconds_since_1970_to_filetime(filestat.st_atime, &ft_high, &ft_low);
670	out_uint32_le(out, ft_low); /* last_access_time */
671	out_uint32_le(out, ft_high);
672
673	seconds_since_1970_to_filetime(filestat.st_mtime, &ft_high, &ft_low);
674	out_uint32_le(out, ft_low); /* last_write_time */
675	out_uint32_le(out, ft_high);
676
677	seconds_since_1970_to_filetime(filestat.st_ctime, &ft_high, &ft_low);
678	out_uint32_le(out, ft_low); /* last_change_time */
679	out_uint32_le(out, ft_high);
680
681	out_uint32_le(out, file_attributes);
682	break;
683
684	case FileStandardInformation:
685
686	out_uint32_le(out, filestat.st_size); /* Allocation size */
687	out_uint32_le(out, 0);
688	out_uint32_le(out, filestat.st_size); /* End of file */
689	out_uint32_le(out, 0);
690	out_uint32_le(out, filestat.st_nlink); /* Number of links */
691	out_uint8(out, 0); /* Delete pending */
692	out_uint8(out, S_ISDIR(filestat.st_mode) ? 1 : 0); /* Directory */
693	break;
694
695	case FileObjectIdInformation:
696
697	out_uint32_le(out, file_attributes); /* File Attributes */
698	out_uint32_le(out, 0); /* Reparse Tag */
699	break;
700
701	default:
702
703	unimpl("IRP Query (File) Information class: 0x%x\n", info_class);
704	return RD_STATUS_INVALID_PARAMETER;
705	}
706	return RD_STATUS_SUCCESS;
707	}
708
709	RD_NTSTATUS
710	disk_set_information(RD_NTHANDLE handle, uint32 info_class, STREAM in, STREAM out)
711	{
712	uint32 length, file_attributes, ft_high, ft_low, delete_on_close;
713	char newname[PATH_MAX], fullpath[PATH_MAX];
714	struct fileinfo *pfinfo;
715	int mode;
716	struct stat filestat;
717	time_t write_time, change_time, access_time, mod_time;
718	struct utimbuf tvs;
719	struct STATFS_T stat_fs;
720
721	pfinfo = &(g_fileinfo[handle]);
722	g_notify_stamp = True;
723
724	switch (info_class)
725	{
726	case FileBasicInformation:
727	write_time = change_time = access_time = 0;
728
729	in_uint8s(in, 4); /* Handle of root dir? */
730	in_uint8s(in, 24); /* unknown */
731
732	/* CreationTime */
733	in_uint32_le(in, ft_low);
734	in_uint32_le(in, ft_high);
735
736	/* AccessTime */
737	in_uint32_le(in, ft_low);
738	in_uint32_le(in, ft_high);
739	if (ft_low \|\| ft_high)
740	access_time = convert_1970_to_filetime(ft_high, ft_low);
741
742	/* WriteTime */
743	in_uint32_le(in, ft_low);
744	in_uint32_le(in, ft_high);
745	if (ft_low \|\| ft_high)
746	write_time = convert_1970_to_filetime(ft_high, ft_low);
747
748	/* ChangeTime */
749	in_uint32_le(in, ft_low);
750	in_uint32_le(in, ft_high);
751	if (ft_low \|\| ft_high)
752	change_time = convert_1970_to_filetime(ft_high, ft_low);
753
754	in_uint32_le(in, file_attributes);
755
756	if (fstat(handle, &filestat))
757	return RD_STATUS_ACCESS_DENIED;
758
759	tvs.modtime = filestat.st_mtime;
760	tvs.actime = filestat.st_atime;
761	if (access_time)
762	tvs.actime = access_time;
763
764
765	if (write_time \|\| change_time)
766	mod_time = MIN(write_time, change_time);
767	else
768	mod_time = write_time ? write_time : change_time;
769
770	if (mod_time)
771	tvs.modtime = mod_time;
772
773
774	if (access_time \|\| write_time \|\| change_time)
775	{
776	#if WITH_DEBUG_RDP5
777	printf("FileBasicInformation access time %s",
778	ctime(&tvs.actime));
779	printf("FileBasicInformation modification time %s",
780	ctime(&tvs.modtime));
781	#endif
782	if (utime(pfinfo->path, &tvs) && errno != EPERM)
783	return RD_STATUS_ACCESS_DENIED;
784	}
785
786	if (!file_attributes)
787	break; /* not valid */
788
789	mode = filestat.st_mode;
790
791	if (file_attributes & FILE_ATTRIBUTE_READONLY)
792	mode &= ~(S_IWUSR \| S_IWGRP \| S_IWOTH);
793	else
794	mode \|= S_IWUSR;
795
796	mode &= 0777;
797	#if WITH_DEBUG_RDP5
798	printf("FileBasicInformation set access mode 0%o", mode);
799	#endif
800
801	if (fchmod(handle, mode))
802	return RD_STATUS_ACCESS_DENIED;
803
804	break;
805
806	case FileRenameInformation:
807
808	in_uint8s(in, 4); /* Handle of root dir? */
809	in_uint8s(in, 0x1a); /* unknown */
810	in_uint32_le(in, length);
811
812	if (length && (length / 2) < 256)
813	{
814	rdp_in_unistr(in, newname, sizeof(newname), length);
815	convert_to_unix_filename(newname);
816	}
817	else
818	{
819	return RD_STATUS_INVALID_PARAMETER;
820	}
821
822	sprintf(fullpath, "%s%s", g_rdpdr_device[pfinfo->device_id].local_path,
823	newname);
824
825	if (rename(pfinfo->path, fullpath) != 0)
826	{
827	perror("rename");
828	return RD_STATUS_ACCESS_DENIED;
829	}
830	break;
831
832	case FileDispositionInformation:
833	/* As far as I understand it, the correct
834	thing to do here is to schedule a delete,
835	so it will be deleted when the file is
836	closed. Subsequent
837	FileDispositionInformation requests with
838	DeleteFile set to FALSE should unschedule
839	the delete. See
840	http://www.osronline.com/article.cfm?article=245. */
841
842	in_uint32_le(in, delete_on_close);
843
844	if (delete_on_close \|\|
845	(pfinfo->
846	accessmask & (FILE_DELETE_ON_CLOSE \| FILE_COMPLETE_IF_OPLOCKED)))
847	{
848	pfinfo->delete_on_close = True;
849	}
850
851	break;
852
853	case FileAllocationInformation:
854	/* Fall through to FileEndOfFileInformation,
855	which uses ftrunc. This is like Samba with
856	"strict allocation = false", and means that
857	we won't detect out-of-quota errors, for
858	example. */
859
860	case FileEndOfFileInformation:
861	in_uint8s(in, 28); /* unknown */
862	in_uint32_le(in, length); /* file size */
863
864	/* prevents start of writing if not enough space left on device */
865	if (STATFS_FN(pfinfo->path, &stat_fs) == 0)
866	if (stat_fs.f_bfree * stat_fs.f_bsize < length)
867	return RD_STATUS_DISK_FULL;
868
869	if (ftruncate_growable(handle, length) != 0)
870	{
871	return RD_STATUS_DISK_FULL;
872	}
873
874	break;
875	default:
876
877	unimpl("IRP Set File Information class: 0x%x\n", info_class);
878	return RD_STATUS_INVALID_PARAMETER;
879	}
880	return RD_STATUS_SUCCESS;
881	}
882
883	RD_NTSTATUS
884	disk_check_notify(RD_NTHANDLE handle)
885	{
886	struct fileinfo *pfinfo;
887	RD_NTSTATUS status = RD_STATUS_PENDING;
888
889	NOTIFY notify;
890
891	pfinfo = &(g_fileinfo[handle]);
892	if (!pfinfo->pdir)
893	return RD_STATUS_INVALID_DEVICE_REQUEST;
894
895
896
897	status = NotifyInfo(handle, pfinfo->info_class, &notify);
898
899	if (status != RD_STATUS_PENDING)
900	return status;
901
902	if (memcmp(&pfinfo->notify, &notify, sizeof(NOTIFY)))
903	{
904	/printf("disk_check_notify found changed event\n"); /
905	memcpy(&pfinfo->notify, &notify, sizeof(NOTIFY));
906	status = RD_STATUS_NOTIFY_ENUM_DIR;
907	}
908
909	return status;
910
911
912	}
913
914	RD_NTSTATUS
915	disk_create_notify(RD_NTHANDLE handle, uint32 info_class)
916	{
917
918	struct fileinfo *pfinfo;
919	RD_NTSTATUS ret = RD_STATUS_PENDING;
920
921	/* printf("start disk_create_notify info_class %X\n", info_class); */
922
923	pfinfo = &(g_fileinfo[handle]);
924	pfinfo->info_class = info_class;
925
926	ret = NotifyInfo(handle, info_class, &pfinfo->notify);
927
928	if (info_class & 0x1000)
929	{ /* ???? */
930	if (ret == RD_STATUS_PENDING)
931	return RD_STATUS_SUCCESS;
932	}
933
934	/* printf("disk_create_notify: num_entries %d\n", pfinfo->notify.num_entries); */
935
936
937	return ret;
938
939	}
940
941	static RD_NTSTATUS
942	NotifyInfo(RD_NTHANDLE handle, uint32 info_class, NOTIFY * p)
943	{
944	struct fileinfo *pfinfo;
945	struct stat filestat;
946	struct dirent *dp;
947	char *fullname;
948	DIR *dpr;
949
950	pfinfo = &(g_fileinfo[handle]);
951	if (fstat(handle, &filestat) < 0)
952	{
953	perror("NotifyInfo");
954	return RD_STATUS_ACCESS_DENIED;
955	}
956	p->modify_time = filestat.st_mtime;
957	p->status_time = filestat.st_ctime;
958	p->num_entries = 0;
959	p->total_time = 0;
960
961
962	dpr = opendir(pfinfo->path);
963	if (!dpr)
964	{
965	perror("NotifyInfo");
966	return RD_STATUS_ACCESS_DENIED;
967	}
968
969
970	while ((dp = readdir(dpr)))
971	{
972	if (!strcmp(dp->d_name, ".") \|\| !strcmp(dp->d_name, ".."))
973	continue;
974	p->num_entries++;
975	fullname = (char *) xmalloc(strlen(pfinfo->path) + strlen(dp->d_name) + 2);
976	sprintf(fullname, "%s/%s", pfinfo->path, dp->d_name);
977
978	if (!stat(fullname, &filestat))
979	{
980	p->total_time += (filestat.st_mtime + filestat.st_ctime);
981	}
982
983	xfree(fullname);
984	}
985	closedir(dpr);
986
987	return RD_STATUS_PENDING;
988	}
989
990	static FsInfoType *
991	FsVolumeInfo(char *fpath)
992	{
993
994	static FsInfoType info;
995	#ifdef USE_SETMNTENT
996	FILE *fdfs;
997	struct mntent *e;
998	#endif
999
1000	/* initialize */
1001	memset(&info, 0, sizeof(info));
1002	strcpy(info.label, "RDESKTOP");
1003	strcpy(info.type, "RDPFS");
1004
1005	#ifdef USE_SETMNTENT
1006	fdfs = setmntent(MNTENT_PATH, "r");
1007	if (!fdfs)
1008	return &info;
1009
1010	while ((e = getmntent(fdfs)))
1011	{
1012	if (str_startswith(e->mnt_dir, fpath))
1013	{
1014	strcpy(info.type, e->mnt_type);
1015	strcpy(info.name, e->mnt_fsname);
1016	if (strstr(e->mnt_opts, "vfat") \|\| strstr(e->mnt_opts, "iso9660"))
1017	{
1018	int fd = open(e->mnt_fsname, O_RDONLY);
1019	if (fd >= 0)
1020	{
1021	unsigned char buf[512];
1022	memset(buf, 0, sizeof(buf));
1023	if (strstr(e->mnt_opts, "vfat"))
1024	/FAT/
1025	{
1026	strcpy(info.type, "vfat");
1027	read(fd, buf, sizeof(buf));
1028	info.serial =
1029	(buf[42] << 24) + (buf[41] << 16) +
1030	(buf[40] << 8) + buf[39];
1031	strncpy(info.label, (char *) buf + 43, 10);
1032	info.label[10] = '\0';
1033	}
1034	else if (lseek(fd, 32767, SEEK_SET) >= 0) /* ISO9660 */
1035	{
1036	read(fd, buf, sizeof(buf));
1037	strncpy(info.label, (char *) buf + 41, 32);
1038	info.label[32] = '\0';
1039	/* info.Serial = (buf[128]<<24)+(buf[127]<<16)+(buf[126]<<8)+buf[125]; */
1040	}
1041	close(fd);
1042	}
1043	}
1044	}
1045	}
1046	endmntent(fdfs);
1047	#else
1048	/* initialize */
1049	memset(&info, 0, sizeof(info));
1050	strcpy(info.label, "RDESKTOP");
1051	strcpy(info.type, "RDPFS");
1052
1053	#endif
1054	return &info;
1055	}
1056
1057
1058	RD_NTSTATUS
1059	disk_query_volume_information(RD_NTHANDLE handle, uint32 info_class, STREAM out)
1060	{
1061	struct STATFS_T stat_fs;
1062	struct fileinfo *pfinfo;
1063	FsInfoType *fsinfo;
1064
1065	pfinfo = &(g_fileinfo[handle]);
1066
1067	if (STATFS_FN(pfinfo->path, &stat_fs) != 0)
1068	{
1069	perror("statfs");
1070	return RD_STATUS_ACCESS_DENIED;
1071	}
1072
1073	fsinfo = FsVolumeInfo(pfinfo->path);
1074
1075	switch (info_class)
1076	{
1077	case FileFsVolumeInformation:
1078
1079	out_uint32_le(out, 0); /* volume creation time low */
1080	out_uint32_le(out, 0); /* volume creation time high */
1081	out_uint32_le(out, fsinfo->serial); /* serial */
1082
1083	out_uint32_le(out, 2 * strlen(fsinfo->label)); /* length of string */
1084
1085	out_uint8(out, 0); /* support objects? */
1086	rdp_out_unistr(out, fsinfo->label, 2 * strlen(fsinfo->label) - 2);
1087	break;
1088
1089	case FileFsSizeInformation:
1090
1091	out_uint32_le(out, stat_fs.f_blocks); /* Total allocation units low */
1092	out_uint32_le(out, 0); /* Total allocation high units */
1093	out_uint32_le(out, stat_fs.f_bfree); /* Available allocation units */
1094	out_uint32_le(out, 0); /* Available allowcation units */
1095	out_uint32_le(out, stat_fs.f_bsize / 0x200); /* Sectors per allocation unit */
1096	out_uint32_le(out, 0x200); /* Bytes per sector */
1097	break;
1098
1099	case FileFsAttributeInformation:
1100
1101	out_uint32_le(out, FS_CASE_SENSITIVE \| FS_CASE_IS_PRESERVED); /* fs attributes */
1102	out_uint32_le(out, F_NAMELEN(stat_fs)); /* max length of filename */
1103
1104	out_uint32_le(out, 2 * strlen(fsinfo->type)); /* length of fs_type */
1105	rdp_out_unistr(out, fsinfo->type, 2 * strlen(fsinfo->type) - 2);
1106	break;
1107
1108	case FileFsLabelInformation:
1109	case FileFsDeviceInformation:
1110	case FileFsControlInformation:
1111	case FileFsFullSizeInformation:
1112	case FileFsObjectIdInformation:
1113	case FileFsMaximumInformation:
1114
1115	default:
1116
1117	unimpl("IRP Query Volume Information class: 0x%x\n", info_class);
1118	return RD_STATUS_INVALID_PARAMETER;
1119	}
1120	return RD_STATUS_SUCCESS;
1121	}
1122
1123	RD_NTSTATUS
1124	disk_query_directory(RD_NTHANDLE handle, uint32 info_class, char *pattern, STREAM out)
1125	{
1126	uint32 file_attributes, ft_low, ft_high;
1127	char *dirname, fullpath[PATH_MAX];
1128	DIR *pdir;
1129	struct dirent *pdirent;
1130	struct stat filestat;
1131	struct fileinfo *pfinfo;
1132
1133	pfinfo = &(g_fileinfo[handle]);
1134	pdir = pfinfo->pdir;
1135	dirname = pfinfo->path;
1136	file_attributes = 0;
1137
1138	switch (info_class)
1139	{
1140	case FileBothDirectoryInformation:
1141
1142	/* If a search pattern is received, remember this pattern, and restart search */
1143	if (pattern[0] != 0)
1144	{
1145	strncpy(pfinfo->pattern, 1 + strrchr(pattern, '/'), PATH_MAX - 1);
1146	rewinddir(pdir);
1147	}
1148
1149	/* find next dirent matching pattern */
1150	pdirent = readdir(pdir);
1151	while (pdirent && fnmatch(pfinfo->pattern, pdirent->d_name, 0) != 0)
1152	pdirent = readdir(pdir);
1153
1154	if (pdirent == NULL)
1155	return RD_STATUS_NO_MORE_FILES;
1156
1157	/* Get information for directory entry */
1158	sprintf(fullpath, "%s/%s", dirname, pdirent->d_name);
1159
1160	if (stat(fullpath, &filestat))
1161	{
1162	switch (errno)
1163	{
1164	case ENOENT:
1165	case ELOOP:
1166	case EACCES:
1167	/* These are non-fatal errors. */
1168	memset(&filestat, 0, sizeof(filestat));
1169	break;
1170	default:
1171	/* Fatal error. By returning STATUS_NO_SUCH_FILE,
1172	the directory list operation will be aborted */
1173	perror(fullpath);
1174	out_uint8(out, 0);
1175	return RD_STATUS_NO_SUCH_FILE;
1176	}
1177	}
1178
1179	if (S_ISDIR(filestat.st_mode))
1180	file_attributes \|= FILE_ATTRIBUTE_DIRECTORY;
1181	if (pdirent->d_name[0] == '.')
1182	file_attributes \|= FILE_ATTRIBUTE_HIDDEN;
1183	if (!file_attributes)
1184	file_attributes \|= FILE_ATTRIBUTE_NORMAL;
1185	if (!(filestat.st_mode & S_IWUSR))
1186	file_attributes \|= FILE_ATTRIBUTE_READONLY;
1187
1188	/* Return requested information */
1189	out_uint8s(out, 8); /* unknown zero */
1190
1191	seconds_since_1970_to_filetime(get_create_time(&filestat), &ft_high,
1192	&ft_low);
1193	out_uint32_le(out, ft_low); /* create time */
1194	out_uint32_le(out, ft_high);
1195
1196	seconds_since_1970_to_filetime(filestat.st_atime, &ft_high, &ft_low);
1197	out_uint32_le(out, ft_low); /* last_access_time */
1198	out_uint32_le(out, ft_high);
1199
1200	seconds_since_1970_to_filetime(filestat.st_mtime, &ft_high, &ft_low);
1201	out_uint32_le(out, ft_low); /* last_write_time */
1202	out_uint32_le(out, ft_high);
1203
1204	seconds_since_1970_to_filetime(filestat.st_ctime, &ft_high, &ft_low);
1205	out_uint32_le(out, ft_low); /* change_write_time */
1206	out_uint32_le(out, ft_high);
1207
1208	out_uint32_le(out, filestat.st_size); /* filesize low */
1209	out_uint32_le(out, 0); /* filesize high */
1210	out_uint32_le(out, filestat.st_size); /* filesize low */
1211	out_uint32_le(out, 0); /* filesize high */
1212	out_uint32_le(out, file_attributes);
1213	out_uint8(out, 2 * strlen(pdirent->d_name) + 2); /* unicode length */
1214	out_uint8s(out, 7); /* pad? */
1215	out_uint8(out, 0); /* 8.3 file length */
1216	out_uint8s(out, 2 * 12); /* 8.3 unicode length */
1217	rdp_out_unistr(out, pdirent->d_name, 2 * strlen(pdirent->d_name));
1218	break;
1219
1220	default:
1221	/* FIXME: Support FileDirectoryInformation,
1222	FileFullDirectoryInformation, and
1223	FileNamesInformation */
1224
1225	unimpl("IRP Query Directory sub: 0x%x\n", info_class);
1226	return RD_STATUS_INVALID_PARAMETER;
1227	}
1228
1229	return RD_STATUS_SUCCESS;
1230	}
1231
1232
1233
1234	static RD_NTSTATUS
1235	disk_device_control(RD_NTHANDLE handle, uint32 request, STREAM in, STREAM out)
1236	{
1237	if (((request >> 16) != 20) \|\| ((request >> 16) != 9))
1238	return RD_STATUS_INVALID_PARAMETER;
1239
1240	/* extract operation */
1241	request >>= 2;
1242	request &= 0xfff;
1243
1244	printf("DISK IOCTL %d\n", request);
1245
1246	switch (request)
1247	{
1248	case 25: /* ? */
1249	case 42: /* ? */
1250	default:
1251	unimpl("DISK IOCTL %d\n", request);
1252	return RD_STATUS_INVALID_PARAMETER;
1253	}
1254
1255	return RD_STATUS_SUCCESS;
1256	}
1257
1258	DEVICE_FNS disk_fns = {
1259	disk_create,
1260	disk_close,
1261	disk_read,
1262	disk_write,
1263	disk_device_control /* device_control */
1264	};

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source: vbox/trunk/src/VBox/RDP/client/disk.c@ 24302

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