rdpdr.c@ 35532

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1	/* -- c-basic-offset: 8 --
2	rdesktop: A Remote Desktop Protocol client.
3	Copyright (C) Matthew Chapman 1999-2007
4
5	This program is free software; you can redistribute it and/or modify
6	it under the terms of the GNU General Public License as published by
7	the Free Software Foundation; either version 2 of the License, or
8	(at your option) any later version.
9
10	This program is distributed in the hope that it will be useful,
11	but WITHOUT ANY WARRANTY; without even the implied warranty of
12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13	GNU General Public License for more details.
14
15	You should have received a copy of the GNU General Public License
16	along with this program; if not, write to the Free Software
17	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18	*/
19
20	/*
21	* Oracle GPL Disclaimer: For the avoidance of doubt, except that if any license choice
22	* other than GPL or LGPL is available it will apply instead, Oracle elects to use only
23	* the General Public License version 2 (GPLv2) at this time for any software where
24	* a choice of GPL license versions is made available with the language indicating
25	* that GPLv2 or any later version may be used, or where a choice of which version
26	* of the GPL is applied is otherwise unspecified.
27	*/
28
29	/*
30	Here are some resources, for your IRP hacking pleasure:
31
32	http://cvs.sourceforge.net/viewcvs.py/mingw/w32api/include/ddk/winddk.h?view=markup
33
34	http://win32.mvps.org/ntfs/streams.cpp
35
36	http://www.acc.umu.se/~bosse/ntifs.h
37
38	http://undocumented.ntinternals.net/UserMode/Undocumented%20Functions/NT%20Objects/File/
39
40	http://us1.samba.org/samba/ftp/specs/smb-nt01.txt
41
42	http://www.osronline.com/
43	*/
44
45	#include <unistd.h>
46	#include <sys/types.h>
47	#include <sys/time.h>
48	#include <dirent.h> /* opendir, closedir, readdir */
49	#include <time.h>
50	#include <errno.h>
51	#include "rdesktop.h"
52
53	#define IRP_MJ_CREATE 0x00
54	#define IRP_MJ_CLOSE 0x02
55	#define IRP_MJ_READ 0x03
56	#define IRP_MJ_WRITE 0x04
57	#define IRP_MJ_QUERY_INFORMATION 0x05
58	#define IRP_MJ_SET_INFORMATION 0x06
59	#define IRP_MJ_QUERY_VOLUME_INFORMATION 0x0a
60	#define IRP_MJ_DIRECTORY_CONTROL 0x0c
61	#define IRP_MJ_DEVICE_CONTROL 0x0e
62	#define IRP_MJ_LOCK_CONTROL 0x11
63
64	#define IRP_MN_QUERY_DIRECTORY 0x01
65	#define IRP_MN_NOTIFY_CHANGE_DIRECTORY 0x02
66
67	extern char g_hostname[16];
68	extern DEVICE_FNS serial_fns;
69	extern DEVICE_FNS printer_fns;
70	extern DEVICE_FNS parallel_fns;
71	extern DEVICE_FNS disk_fns;
72	#ifdef WITH_SCARD
73	extern DEVICE_FNS scard_fns;
74	#endif
75	extern FILEINFO g_fileinfo[];
76	extern RD_BOOL g_notify_stamp;
77
78	static VCHANNEL *rdpdr_channel;
79
80	/* If select() times out, the request for the device with handle g_min_timeout_fd is aborted */
81	RD_NTHANDLE g_min_timeout_fd;
82	uint32 g_num_devices;
83
84	/* Table with information about rdpdr devices */
85	RDPDR_DEVICE g_rdpdr_device[RDPDR_MAX_DEVICES];
86	char *g_rdpdr_clientname = NULL;
87
88	/* Used to store incoming io request, until they are ready to be completed */
89	/* using a linked list ensures that they are processed in the right order, */
90	/* if multiple ios are being done on the same fd */
91	struct async_iorequest
92	{
93	uint32 fd, major, minor, offset, device, id, length, partial_len;
94	long timeout, /* Total timeout */
95	itv_timeout; /* Interval timeout (between serial characters) */
96	uint8 *buffer;
97	DEVICE_FNS *fns;
98
99	struct async_iorequest next; / next element in list */
100	};
101
102	struct async_iorequest *g_iorequest;
103
104	/* Return device_id for a given handle */
105	int
106	get_device_index(RD_NTHANDLE handle)
107	{
108	int i;
109	for (i = 0; i < RDPDR_MAX_DEVICES; i++)
110	{
111	if (g_rdpdr_device[i].handle == handle)
112	return i;
113	}
114	return -1;
115	}
116
117	/* Converts a windows path to a unix path */
118	void
119	convert_to_unix_filename(char *filename)
120	{
121	char *p;
122
123	while ((p = strchr(filename, '\\')))
124	{
125	*p = '/';
126	}
127	}
128
129	static RD_BOOL
130	rdpdr_handle_ok(int device, int handle)
131	{
132	switch (g_rdpdr_device[device].device_type)
133	{
134	case DEVICE_TYPE_PARALLEL:
135	case DEVICE_TYPE_SERIAL:
136	case DEVICE_TYPE_PRINTER:
137	case DEVICE_TYPE_SCARD:
138	if (g_rdpdr_device[device].handle != handle)
139	return False;
140	break;
141	case DEVICE_TYPE_DISK:
142	if (g_fileinfo[handle].device_id != device)
143	return False;
144	break;
145	}
146	return True;
147	}
148
149	/* Add a new io request to the table containing pending io requests so it won't block rdesktop */
150	static RD_BOOL
151	add_async_iorequest(uint32 device, uint32 file, uint32 id, uint32 major, uint32 length,
152	DEVICE_FNS * fns, uint32 total_timeout, uint32 interval_timeout, uint8 * buffer,
153	uint32 offset)
154	{
155	struct async_iorequest *iorq;
156
157	if (g_iorequest == NULL)
158	{
159	g_iorequest = (struct async_iorequest *) xmalloc(sizeof(struct async_iorequest));
160	if (!g_iorequest)
161	return False;
162	g_iorequest->fd = 0;
163	g_iorequest->next = NULL;
164	}
165
166	iorq = g_iorequest;
167
168	while (iorq->fd != 0)
169	{
170	/* create new element if needed */
171	if (iorq->next == NULL)
172	{
173	iorq->next =
174	(struct async_iorequest *) xmalloc(sizeof(struct async_iorequest));
175	if (!iorq->next)
176	return False;
177	iorq->next->fd = 0;
178	iorq->next->next = NULL;
179	}
180	iorq = iorq->next;
181	}
182	iorq->device = device;
183	iorq->fd = file;
184	iorq->id = id;
185	iorq->major = major;
186	iorq->length = length;
187	iorq->partial_len = 0;
188	iorq->fns = fns;
189	iorq->timeout = total_timeout;
190	iorq->itv_timeout = interval_timeout;
191	iorq->buffer = buffer;
192	iorq->offset = offset;
193	return True;
194	}
195
196	static void
197	rdpdr_send_connect(void)
198	{
199	uint8 magic[4] = "rDCC";
200	STREAM s;
201
202	s = channel_init(rdpdr_channel, 12);
203	out_uint8a(s, magic, 4);
204	out_uint16_le(s, 1); /* unknown */
205	out_uint16_le(s, 5);
206	out_uint32_be(s, 0x815ed39d); /* IP address (use 127.0.0.1) 0x815ed39d */
207	s_mark_end(s);
208	channel_send(s, rdpdr_channel);
209	}
210
211
212	static void
213	rdpdr_send_name(void)
214	{
215	uint8 magic[4] = "rDNC";
216	STREAM s;
217	uint32 hostlen;
218
219	if (NULL == g_rdpdr_clientname)
220	{
221	g_rdpdr_clientname = g_hostname;
222	}
223	hostlen = (strlen(g_rdpdr_clientname) + 1) * 2;
224
225	s = channel_init(rdpdr_channel, 16 + hostlen);
226	out_uint8a(s, magic, 4);
227	out_uint16_le(s, 0x63); /* unknown */
228	out_uint16_le(s, 0x72);
229	out_uint32(s, 0);
230	out_uint32_le(s, hostlen);
231	rdp_out_unistr(s, g_rdpdr_clientname, hostlen - 2);
232	s_mark_end(s);
233	channel_send(s, rdpdr_channel);
234	}
235
236	/* Returns the size of the payload of the announce packet */
237	static int
238	announcedata_size()
239	{
240	int size, i;
241	PRINTER *printerinfo;
242
243	size = 8; /* static announce size */
244	size += g_num_devices * 0x14;
245
246	for (i = 0; i < g_num_devices; i++)
247	{
248	if (g_rdpdr_device[i].device_type == DEVICE_TYPE_PRINTER)
249	{
250	printerinfo = (PRINTER *) g_rdpdr_device[i].pdevice_data;
251	printerinfo->bloblen =
252	printercache_load_blob(printerinfo->printer, &(printerinfo->blob));
253
254	size += 0x18;
255	size += 2 * strlen(printerinfo->driver) + 2;
256	size += 2 * strlen(printerinfo->printer) + 2;
257	size += printerinfo->bloblen;
258	}
259	}
260
261	return size;
262	}
263
264	static void
265	rdpdr_send_available(void)
266	{
267
268	uint8 magic[4] = "rDAD";
269	uint32 driverlen, printerlen, bloblen;
270	int i;
271	STREAM s;
272	PRINTER *printerinfo;
273
274	s = channel_init(rdpdr_channel, announcedata_size());
275	out_uint8a(s, magic, 4);
276	out_uint32_le(s, g_num_devices);
277
278	for (i = 0; i < g_num_devices; i++)
279	{
280	out_uint32_le(s, g_rdpdr_device[i].device_type);
281	out_uint32_le(s, i); /* RDP Device ID */
282	/* Is it possible to use share names longer than 8 chars?
283	/astrand */
284	out_uint8p(s, g_rdpdr_device[i].name, 8);
285
286	switch (g_rdpdr_device[i].device_type)
287	{
288	case DEVICE_TYPE_PRINTER:
289	printerinfo = (PRINTER *) g_rdpdr_device[i].pdevice_data;
290
291	driverlen = 2 * strlen(printerinfo->driver) + 2;
292	printerlen = 2 * strlen(printerinfo->printer) + 2;
293	bloblen = printerinfo->bloblen;
294
295	out_uint32_le(s, 24 + driverlen + printerlen + bloblen); /* length of extra info */
296	out_uint32_le(s, printerinfo->default_printer ? 2 : 0);
297	out_uint8s(s, 8); /* unknown */
298	out_uint32_le(s, driverlen);
299	out_uint32_le(s, printerlen);
300	out_uint32_le(s, bloblen);
301	rdp_out_unistr(s, printerinfo->driver, driverlen - 2);
302	rdp_out_unistr(s, printerinfo->printer, printerlen - 2);
303	out_uint8a(s, printerinfo->blob, bloblen);
304
305	if (printerinfo->blob)
306	xfree(printerinfo->blob); /* Blob is sent twice if reconnecting */
307	break;
308	default:
309	out_uint32(s, 0);
310	}
311	}
312	#if 0
313	out_uint32_le(s, 0x20); /* Device type 0x20 - smart card */
314	out_uint32_le(s, 0);
315	out_uint8p(s, "SCARD", 5);
316	out_uint8s(s, 3);
317	out_uint32(s, 0);
318	#endif
319
320	s_mark_end(s);
321	channel_send(s, rdpdr_channel);
322	}
323
324	void
325	rdpdr_send_completion(uint32 device, uint32 id, uint32 status, uint32 result, uint8 * buffer,
326	uint32 length)
327	{
328	uint8 magic[4] = "rDCI";
329	STREAM s;
330
331	#ifdef WITH_SCARD
332	scard_lock(SCARD_LOCK_RDPDR);
333	#endif
334	s = channel_init(rdpdr_channel, 20 + length);
335	out_uint8a(s, magic, 4);
336	out_uint32_le(s, device);
337	out_uint32_le(s, id);
338	out_uint32_le(s, status);
339	out_uint32_le(s, result);
340	out_uint8p(s, buffer, length);
341	s_mark_end(s);
342	/* JIF */
343	#ifdef WITH_DEBUG_RDP5
344	printf("--> rdpdr_send_completion\n");
345	/* hexdump(s->channel_hdr + 8, s->end - s->channel_hdr - 8); */
346	#endif
347	channel_send(s, rdpdr_channel);
348	#ifdef WITH_SCARD
349	scard_unlock(SCARD_LOCK_RDPDR);
350	#endif
351	}
352
353	static void
354	rdpdr_process_irp(STREAM s)
355	{
356	uint32 result = 0,
357	length = 0,
358	desired_access = 0,
359	request,
360	file,
361	info_level,
362	buffer_len,
363	id,
364	major,
365	minor,
366	device,
367	offset,
368	bytes_in,
369	bytes_out,
370	error_mode,
371	share_mode, disposition, total_timeout, interval_timeout, flags_and_attributes = 0;
372
373	char filename[PATH_MAX];
374	uint8 buffer, pst_buf;
375	struct stream out;
376	DEVICE_FNS *fns;
377	RD_BOOL rw_blocking = True;
378	RD_NTSTATUS status = RD_STATUS_INVALID_DEVICE_REQUEST;
379
380	in_uint32_le(s, device);
381	in_uint32_le(s, file);
382	in_uint32_le(s, id);
383	in_uint32_le(s, major);
384	in_uint32_le(s, minor);
385
386	buffer_len = 0;
387	buffer = (uint8 *) xmalloc(1024);
388	buffer[0] = 0;
389
390	switch (g_rdpdr_device[device].device_type)
391	{
392	case DEVICE_TYPE_SERIAL:
393
394	fns = &serial_fns;
395	rw_blocking = False;
396	break;
397
398	case DEVICE_TYPE_PARALLEL:
399
400	fns = &parallel_fns;
401	rw_blocking = False;
402	break;
403
404	case DEVICE_TYPE_PRINTER:
405
406	fns = &printer_fns;
407	break;
408
409	case DEVICE_TYPE_DISK:
410
411	fns = &disk_fns;
412	rw_blocking = False;
413	break;
414
415	case DEVICE_TYPE_SCARD:
416	#ifdef WITH_SCARD
417	fns = &scard_fns;
418	rw_blocking = False;
419	break;
420	#endif
421	default:
422
423	error("IRP for bad device %ld\n", device);
424	return;
425	}
426
427	switch (major)
428	{
429	case IRP_MJ_CREATE:
430
431	in_uint32_be(s, desired_access);
432	in_uint8s(s, 0x08); /* unknown */
433	in_uint32_le(s, error_mode);
434	in_uint32_le(s, share_mode);
435	in_uint32_le(s, disposition);
436	in_uint32_le(s, flags_and_attributes);
437	in_uint32_le(s, length);
438
439	if (length && (length / 2) < 256)
440	{
441	rdp_in_unistr(s, filename, sizeof(filename), length);
442	convert_to_unix_filename(filename);
443	}
444	else
445	{
446	filename[0] = 0;
447	}
448
449	if (!fns->create)
450	{
451	status = RD_STATUS_NOT_SUPPORTED;
452	break;
453	}
454
455	status = fns->create(device, desired_access, share_mode, disposition,
456	flags_and_attributes, filename, &result);
457	buffer_len = 1;
458	break;
459
460	case IRP_MJ_CLOSE:
461	if (!fns->close)
462	{
463	status = RD_STATUS_NOT_SUPPORTED;
464	break;
465	}
466
467	status = fns->close(file);
468	break;
469
470	case IRP_MJ_READ:
471
472	if (!fns->read)
473	{
474	status = RD_STATUS_NOT_SUPPORTED;
475	break;
476	}
477
478	in_uint32_le(s, length);
479	in_uint32_le(s, offset);
480	#if WITH_DEBUG_RDP5
481	DEBUG(("RDPDR IRP Read (length: %d, offset: %d)\n", length, offset));
482	#endif
483	if (!rdpdr_handle_ok(device, file))
484	{
485	status = RD_STATUS_INVALID_HANDLE;
486	break;
487	}
488
489	if (rw_blocking) /* Complete read immediately */
490	{
491	buffer = (uint8 ) xrealloc((void ) buffer, length);
492	if (!buffer)
493	{
494	status = RD_STATUS_CANCELLED;
495	break;
496	}
497	status = fns->read(file, buffer, length, offset, &result);
498	buffer_len = result;
499	break;
500	}
501
502	/* Add request to table */
503	pst_buf = (uint8 *) xmalloc(length);
504	if (!pst_buf)
505	{
506	status = RD_STATUS_CANCELLED;
507	break;
508	}
509	serial_get_timeout(file, length, &total_timeout, &interval_timeout);
510	if (add_async_iorequest
511	(device, file, id, major, length, fns, total_timeout, interval_timeout,
512	pst_buf, offset))
513	{
514	status = RD_STATUS_PENDING;
515	break;
516	}
517
518	status = RD_STATUS_CANCELLED;
519	break;
520	case IRP_MJ_WRITE:
521
522	buffer_len = 1;
523
524	if (!fns->write)
525	{
526	status = RD_STATUS_NOT_SUPPORTED;
527	break;
528	}
529
530	in_uint32_le(s, length);
531	in_uint32_le(s, offset);
532	in_uint8s(s, 0x18);
533	#if WITH_DEBUG_RDP5
534	DEBUG(("RDPDR IRP Write (length: %d)\n", result));
535	#endif
536	if (!rdpdr_handle_ok(device, file))
537	{
538	status = RD_STATUS_INVALID_HANDLE;
539	break;
540	}
541
542	if (rw_blocking) /* Complete immediately */
543	{
544	status = fns->write(file, s->p, length, offset, &result);
545	break;
546	}
547
548	/* Add to table */
549	pst_buf = (uint8 *) xmalloc(length);
550	if (!pst_buf)
551	{
552	status = RD_STATUS_CANCELLED;
553	break;
554	}
555
556	in_uint8a(s, pst_buf, length);
557
558	if (add_async_iorequest
559	(device, file, id, major, length, fns, 0, 0, pst_buf, offset))
560	{
561	status = RD_STATUS_PENDING;
562	break;
563	}
564
565	status = RD_STATUS_CANCELLED;
566	break;
567
568	case IRP_MJ_QUERY_INFORMATION:
569
570	if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK)
571	{
572	status = RD_STATUS_INVALID_HANDLE;
573	break;
574	}
575	in_uint32_le(s, info_level);
576
577	out.data = out.p = buffer;
578	out.size = sizeof(buffer);
579	status = disk_query_information(file, info_level, &out);
580	result = buffer_len = out.p - out.data;
581
582	break;
583
584	case IRP_MJ_SET_INFORMATION:
585
586	if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK)
587	{
588	status = RD_STATUS_INVALID_HANDLE;
589	break;
590	}
591
592	in_uint32_le(s, info_level);
593
594	out.data = out.p = buffer;
595	out.size = sizeof(buffer);
596	status = disk_set_information(file, info_level, s, &out);
597	result = buffer_len = out.p - out.data;
598	break;
599
600	case IRP_MJ_QUERY_VOLUME_INFORMATION:
601
602	if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK)
603	{
604	status = RD_STATUS_INVALID_HANDLE;
605	break;
606	}
607
608	in_uint32_le(s, info_level);
609
610	out.data = out.p = buffer;
611	out.size = sizeof(buffer);
612	status = disk_query_volume_information(file, info_level, &out);
613	result = buffer_len = out.p - out.data;
614	break;
615
616	case IRP_MJ_DIRECTORY_CONTROL:
617
618	if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK)
619	{
620	status = RD_STATUS_INVALID_HANDLE;
621	break;
622	}
623
624	switch (minor)
625	{
626	case IRP_MN_QUERY_DIRECTORY:
627
628	in_uint32_le(s, info_level);
629	in_uint8s(s, 1);
630	in_uint32_le(s, length);
631	in_uint8s(s, 0x17);
632	if (length && length < 2 * 255)
633	{
634	rdp_in_unistr(s, filename, sizeof(filename),
635	length);
636	convert_to_unix_filename(filename);
637	}
638	else
639	{
640	filename[0] = 0;
641	}
642	out.data = out.p = buffer;
643	out.size = sizeof(buffer);
644	status = disk_query_directory(file, info_level, filename,
645	&out);
646	result = buffer_len = out.p - out.data;
647	if (!buffer_len)
648	buffer_len++;
649	break;
650
651	case IRP_MN_NOTIFY_CHANGE_DIRECTORY:
652
653	/* JIF
654	unimpl("IRP major=0x%x minor=0x%x: IRP_MN_NOTIFY_CHANGE_DIRECTORY\n", major, minor); */
655
656	in_uint32_le(s, info_level); /* notify mask */
657
658	status = disk_create_notify(file, info_level);
659	result = 0;
660
661	if (status == RD_STATUS_PENDING)
662	add_async_iorequest(device, file, id, major, length,
663	fns, 0, 0, NULL, 0);
664	break;
665
666	default:
667
668	status = RD_STATUS_INVALID_PARAMETER;
669	/* JIF */
670	unimpl("IRP major=0x%x minor=0x%x\n", major, minor);
671	}
672	break;
673
674	case IRP_MJ_DEVICE_CONTROL:
675
676	if (!fns->device_control)
677	{
678	status = RD_STATUS_NOT_SUPPORTED;
679	break;
680	}
681
682	in_uint32_le(s, bytes_out);
683	in_uint32_le(s, bytes_in);
684	in_uint32_le(s, request);
685	in_uint8s(s, 0x14);
686
687	buffer = (uint8 ) xrealloc((void ) buffer, bytes_out + 0x14);
688	if (!buffer)
689	{
690	status = RD_STATUS_CANCELLED;
691	break;
692	}
693
694	out.data = out.p = buffer;
695	out.size = sizeof(buffer);
696
697	#ifdef WITH_SCARD
698	scardSetInfo(device, id, bytes_out + 0x14);
699	#endif
700	status = fns->device_control(file, request, s, &out);
701	result = buffer_len = out.p - out.data;
702
703	/* Serial SERIAL_WAIT_ON_MASK */
704	if (status == RD_STATUS_PENDING)
705	{
706	if (add_async_iorequest
707	(device, file, id, major, length, fns, 0, 0, NULL, 0))
708	{
709	status = RD_STATUS_PENDING;
710	break;
711	}
712	}
713	#ifdef WITH_SCARD
714	else if (status == (RD_STATUS_PENDING \| 0xC0000000))
715	status = RD_STATUS_PENDING;
716	#endif
717	break;
718
719
720	case IRP_MJ_LOCK_CONTROL:
721
722	if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK)
723	{
724	status = RD_STATUS_INVALID_HANDLE;
725	break;
726	}
727
728	in_uint32_le(s, info_level);
729
730	out.data = out.p = buffer;
731	out.size = sizeof(buffer);
732	/* FIXME: Perhaps consider actually do
733	something here :-) */
734	status = RD_STATUS_SUCCESS;
735	result = buffer_len = out.p - out.data;
736	break;
737
738	default:
739	unimpl("IRP major=0x%x minor=0x%x\n", major, minor);
740	break;
741	}
742
743	if (status != RD_STATUS_PENDING)
744	{
745	rdpdr_send_completion(device, id, status, result, buffer, buffer_len);
746	}
747	if (buffer)
748	xfree(buffer);
749	buffer = NULL;
750	}
751
752	static void
753	rdpdr_send_clientcapabilty(void)
754	{
755	uint8 magic[4] = "rDPC";
756	STREAM s;
757
758	s = channel_init(rdpdr_channel, 0x50);
759	out_uint8a(s, magic, 4);
760	out_uint32_le(s, 5); /* count */
761	out_uint16_le(s, 1); /* first */
762	out_uint16_le(s, 0x28); /* length */
763	out_uint32_le(s, 1);
764	out_uint32_le(s, 2);
765	out_uint16_le(s, 2);
766	out_uint16_le(s, 5);
767	out_uint16_le(s, 1);
768	out_uint16_le(s, 5);
769	out_uint16_le(s, 0xFFFF);
770	out_uint16_le(s, 0);
771	out_uint32_le(s, 0);
772	out_uint32_le(s, 3);
773	out_uint32_le(s, 0);
774	out_uint32_le(s, 0);
775	out_uint16_le(s, 2); /* second */
776	out_uint16_le(s, 8); /* length */
777	out_uint32_le(s, 1);
778	out_uint16_le(s, 3); /* third */
779	out_uint16_le(s, 8); /* length */
780	out_uint32_le(s, 1);
781	out_uint16_le(s, 4); /* fourth */
782	out_uint16_le(s, 8); /* length */
783	out_uint32_le(s, 1);
784	out_uint16_le(s, 5); /* fifth */
785	out_uint16_le(s, 8); /* length */
786	out_uint32_le(s, 1);
787
788	s_mark_end(s);
789	channel_send(s, rdpdr_channel);
790	}
791
792	static void
793	rdpdr_process(STREAM s)
794	{
795	uint32 handle;
796	uint8 *magic;
797
798	#if WITH_DEBUG_RDP5
799	printf("--- rdpdr_process ---\n");
800	hexdump(s->p, s->end - s->p);
801	#endif
802	in_uint8p(s, magic, 4);
803
804	if ((magic[0] == 'r') && (magic[1] == 'D'))
805	{
806	if ((magic[2] == 'R') && (magic[3] == 'I'))
807	{
808	rdpdr_process_irp(s);
809	return;
810	}
811	if ((magic[2] == 'n') && (magic[3] == 'I'))
812	{
813	rdpdr_send_connect();
814	rdpdr_send_name();
815	return;
816	}
817	if ((magic[2] == 'C') && (magic[3] == 'C'))
818	{
819	/* connect from server */
820	rdpdr_send_clientcapabilty();
821	rdpdr_send_available();
822	return;
823	}
824	if ((magic[2] == 'r') && (magic[3] == 'd'))
825	{
826	/* connect to a specific resource */
827	in_uint32(s, handle);
828	#if WITH_DEBUG_RDP5
829	DEBUG(("RDPDR: Server connected to resource %d\n", handle));
830	#endif
831	return;
832	}
833	if ((magic[2] == 'P') && (magic[3] == 'S'))
834	{
835	/* server capability */
836	return;
837	}
838	}
839	if ((magic[0] == 'R') && (magic[1] == 'P'))
840	{
841	if ((magic[2] == 'C') && (magic[3] == 'P'))
842	{
843	printercache_process(s);
844	return;
845	}
846	}
847	unimpl("RDPDR packet type %c%c%c%c\n", magic[0], magic[1], magic[2], magic[3]);
848	}
849
850	RD_BOOL
851	rdpdr_init()
852	{
853	if (g_num_devices > 0)
854	{
855	rdpdr_channel =
856	channel_register("rdpdr",
857	CHANNEL_OPTION_INITIALIZED \| CHANNEL_OPTION_COMPRESS_RDP,
858	rdpdr_process);
859	}
860
861	return (rdpdr_channel != NULL);
862	}
863
864	/* Add file descriptors of pending io request to select() */
865	void
866	rdpdr_add_fds(int n, fd_set rfds, fd_set * wfds, struct timeval tv, RD_BOOL timeout)
867	{
868	uint32 select_timeout = 0; /* Timeout value to be used for select() (in millisecons). */
869	struct async_iorequest *iorq;
870	char c;
871
872	iorq = g_iorequest;
873	while (iorq != NULL)
874	{
875	if (iorq->fd != 0)
876	{
877	switch (iorq->major)
878	{
879	case IRP_MJ_READ:
880	/* Is this FD valid? FDs will
881	be invalid when
882	reconnecting. FIXME: Real
883	support for reconnects. */
884
885	FD_SET(iorq->fd, rfds);
886	n = MAX(n, iorq->fd);
887
888	/* Check if io request timeout is smaller than current (but not 0). */
889	if (iorq->timeout
890	&& (select_timeout == 0
891	\|\| iorq->timeout < select_timeout))
892	{
893	/* Set new timeout */
894	select_timeout = iorq->timeout;
895	g_min_timeout_fd = iorq->fd; /* Remember fd */
896	tv->tv_sec = select_timeout / 1000;
897	tv->tv_usec = (select_timeout % 1000) * 1000;
898	*timeout = True;
899	break;
900	}
901	if (iorq->itv_timeout && iorq->partial_len > 0
902	&& (select_timeout == 0
903	\|\| iorq->itv_timeout < select_timeout))
904	{
905	/* Set new timeout */
906	select_timeout = iorq->itv_timeout;
907	g_min_timeout_fd = iorq->fd; /* Remember fd */
908	tv->tv_sec = select_timeout / 1000;
909	tv->tv_usec = (select_timeout % 1000) * 1000;
910	*timeout = True;
911	break;
912	}
913	break;
914
915	case IRP_MJ_WRITE:
916	/* FD still valid? See above. */
917	if ((write(iorq->fd, &c, 0) != 0) && (errno == EBADF))
918	break;
919
920	FD_SET(iorq->fd, wfds);
921	n = MAX(n, iorq->fd);
922	break;
923
924	case IRP_MJ_DEVICE_CONTROL:
925	if (select_timeout > 5)
926	select_timeout = 5; /* serial event queue */
927	break;
928
929	}
930
931	}
932
933	iorq = iorq->next;
934	}
935	}
936
937	struct async_iorequest *
938	rdpdr_remove_iorequest(struct async_iorequest prev, struct async_iorequest iorq)
939	{
940	if (!iorq)
941	return NULL;
942
943	if (iorq->buffer)
944	xfree(iorq->buffer);
945	if (prev)
946	{
947	prev->next = iorq->next;
948	xfree(iorq);
949	iorq = prev->next;
950	}
951	else
952	{
953	/* Even if NULL */
954	g_iorequest = iorq->next;
955	xfree(iorq);
956	iorq = NULL;
957	}
958	return iorq;
959	}
960
961	/* Check if select() returned with one of the rdpdr file descriptors, and complete io if it did */
962	static void
963	_rdpdr_check_fds(fd_set * rfds, fd_set * wfds, RD_BOOL timed_out)
964	{
965	RD_NTSTATUS status;
966	uint32 result = 0;
967	DEVICE_FNS *fns;
968	struct async_iorequest *iorq;
969	struct async_iorequest *prev;
970	uint32 req_size = 0;
971	uint32 buffer_len;
972	struct stream out;
973	uint8 *buffer = NULL;
974
975
976	if (timed_out)
977	{
978	/* check serial iv_timeout */
979
980	iorq = g_iorequest;
981	prev = NULL;
982	while (iorq != NULL)
983	{
984	if (iorq->fd == g_min_timeout_fd)
985	{
986	if ((iorq->partial_len > 0) &&
987	(g_rdpdr_device[iorq->device].device_type ==
988	DEVICE_TYPE_SERIAL))
989	{
990
991	/* iv_timeout between 2 chars, send partial_len */
992	/printf("RDPDR: IVT total %u bytes read of %u\n", iorq->partial_len, iorq->length); /
993	rdpdr_send_completion(iorq->device,
994	iorq->id, RD_STATUS_SUCCESS,
995	iorq->partial_len,
996	iorq->buffer, iorq->partial_len);
997	iorq = rdpdr_remove_iorequest(prev, iorq);
998	return;
999	}
1000	else
1001	{
1002	break;
1003	}
1004
1005	}
1006	else
1007	{
1008	break;
1009	}
1010
1011
1012	prev = iorq;
1013	if (iorq)
1014	iorq = iorq->next;
1015
1016	}
1017
1018	rdpdr_abort_io(g_min_timeout_fd, 0, RD_STATUS_TIMEOUT);
1019	return;
1020	}
1021
1022	iorq = g_iorequest;
1023	prev = NULL;
1024	while (iorq != NULL)
1025	{
1026	if (iorq->fd != 0)
1027	{
1028	switch (iorq->major)
1029	{
1030	case IRP_MJ_READ:
1031	if (FD_ISSET(iorq->fd, rfds))
1032	{
1033	/* Read the data */
1034	fns = iorq->fns;
1035
1036	req_size =
1037	(iorq->length - iorq->partial_len) >
1038	8192 ? 8192 : (iorq->length -
1039	iorq->partial_len);
1040	/* never read larger chunks than 8k - chances are that it will block */
1041	status = fns->read(iorq->fd,
1042	iorq->buffer + iorq->partial_len,
1043	req_size, iorq->offset, &result);
1044
1045	if ((long) result > 0)
1046	{
1047	iorq->partial_len += result;
1048	iorq->offset += result;
1049	}
1050	#if WITH_DEBUG_RDP5
1051	DEBUG(("RDPDR: %d bytes of data read\n", result));
1052	#endif
1053	/* only delete link if all data has been transfered */
1054	/* or if result was 0 and status success - EOF */
1055	if ((iorq->partial_len == iorq->length) \|\|
1056	(result == 0))
1057	{
1058	#if WITH_DEBUG_RDP5
1059	DEBUG(("RDPDR: AIO total %u bytes read of %u\n", iorq->partial_len, iorq->length));
1060	#endif
1061	rdpdr_send_completion(iorq->device,
1062	iorq->id, status,
1063	iorq->partial_len,
1064	iorq->buffer,
1065	iorq->partial_len);
1066	iorq = rdpdr_remove_iorequest(prev, iorq);
1067	}
1068	}
1069	break;
1070	case IRP_MJ_WRITE:
1071	if (FD_ISSET(iorq->fd, wfds))
1072	{
1073	/* Write data. */
1074	fns = iorq->fns;
1075
1076	req_size =
1077	(iorq->length - iorq->partial_len) >
1078	8192 ? 8192 : (iorq->length -
1079	iorq->partial_len);
1080
1081	/* never write larger chunks than 8k - chances are that it will block */
1082	status = fns->write(iorq->fd,
1083	iorq->buffer +
1084	iorq->partial_len, req_size,
1085	iorq->offset, &result);
1086
1087	if ((long) result > 0)
1088	{
1089	iorq->partial_len += result;
1090	iorq->offset += result;
1091	}
1092
1093	#if WITH_DEBUG_RDP5
1094	DEBUG(("RDPDR: %d bytes of data written\n",
1095	result));
1096	#endif
1097	/* only delete link if all data has been transfered */
1098	/* or we couldn't write */
1099	if ((iorq->partial_len == iorq->length)
1100	\|\| (result == 0))
1101	{
1102	#if WITH_DEBUG_RDP5
1103	DEBUG(("RDPDR: AIO total %u bytes written of %u\n", iorq->partial_len, iorq->length));
1104	#endif
1105	rdpdr_send_completion(iorq->device,
1106	iorq->id, status,
1107	iorq->partial_len,
1108	(uint8 *) "", 1);
1109
1110	iorq = rdpdr_remove_iorequest(prev, iorq);
1111	}
1112	}
1113	break;
1114	case IRP_MJ_DEVICE_CONTROL:
1115	if (serial_get_event(iorq->fd, &result))
1116	{
1117	buffer = (uint8 ) xrealloc((void ) buffer, 0x14);
1118	out.data = out.p = buffer;
1119	out.size = sizeof(buffer);
1120	out_uint32_le(&out, result);
1121	result = buffer_len = out.p - out.data;
1122	status = RD_STATUS_SUCCESS;
1123	rdpdr_send_completion(iorq->device, iorq->id,
1124	status, result, buffer,
1125	buffer_len);
1126	xfree(buffer);
1127	iorq = rdpdr_remove_iorequest(prev, iorq);
1128	}
1129
1130	break;
1131	}
1132
1133	}
1134	prev = iorq;
1135	if (iorq)
1136	iorq = iorq->next;
1137	}
1138
1139	/* Check notify */
1140	iorq = g_iorequest;
1141	prev = NULL;
1142	while (iorq != NULL)
1143	{
1144	if (iorq->fd != 0)
1145	{
1146	switch (iorq->major)
1147	{
1148
1149	case IRP_MJ_DIRECTORY_CONTROL:
1150	if (g_rdpdr_device[iorq->device].device_type ==
1151	DEVICE_TYPE_DISK)
1152	{
1153
1154	if (g_notify_stamp)
1155	{
1156	g_notify_stamp = False;
1157	status = disk_check_notify(iorq->fd);
1158	if (status != RD_STATUS_PENDING)
1159	{
1160	rdpdr_send_completion(iorq->device,
1161	iorq->id,
1162	status, 0,
1163	NULL, 0);
1164	iorq = rdpdr_remove_iorequest(prev,
1165	iorq);
1166	}
1167	}
1168	}
1169	break;
1170
1171
1172
1173	}
1174	}
1175
1176	prev = iorq;
1177	if (iorq)
1178	iorq = iorq->next;
1179	}
1180
1181	}
1182
1183	void
1184	rdpdr_check_fds(fd_set * rfds, fd_set * wfds, RD_BOOL timed_out)
1185	{
1186	fd_set dummy;
1187
1188
1189	FD_ZERO(&dummy);
1190
1191
1192	/* fist check event queue only,
1193	any serial wait event must be done before read block will be sent
1194	*/
1195
1196	_rdpdr_check_fds(&dummy, &dummy, False);
1197	_rdpdr_check_fds(rfds, wfds, timed_out);
1198	}
1199
1200
1201	/* Abort a pending io request for a given handle and major */
1202	RD_BOOL
1203	rdpdr_abort_io(uint32 fd, uint32 major, RD_NTSTATUS status)
1204	{
1205	uint32 result;
1206	struct async_iorequest *iorq;
1207	struct async_iorequest *prev;
1208
1209	iorq = g_iorequest;
1210	prev = NULL;
1211	while (iorq != NULL)
1212	{
1213	/* Only remove from table when major is not set, or when correct major is supplied.
1214	Abort read should not abort a write io request. */
1215	if ((iorq->fd == fd) && (major == 0 \|\| iorq->major == major))
1216	{
1217	result = 0;
1218	rdpdr_send_completion(iorq->device, iorq->id, status, result, (uint8 *) "",
1219	1);
1220
1221	iorq = rdpdr_remove_iorequest(prev, iorq);
1222	return True;
1223	}
1224
1225	prev = iorq;
1226	iorq = iorq->next;
1227	}
1228
1229	return False;
1230	}

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source: vbox/trunk/src/VBox/RDP/client/rdpdr.c@ 35532

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