serial.c@ 33889

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1	/* -- c-basic-offset: 8 --
2	rdesktop: A Remote Desktop Protocol client.
3
4	Copyright (C) Matthew Chapman 1999-2007
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	* Oracle 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, Oracle 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 <unistd.h>
31	#include <fcntl.h>
32	#include <termios.h>
33	#include <strings.h>
34	#include <sys/ioctl.h>
35
36	#ifdef HAVE_SYS_MODEM_H
37	#include <sys/modem.h>
38	#endif
39	#ifdef HAVE_SYS_FILIO_H
40	#include <sys/filio.h>
41	#endif
42	#ifdef HAVE_SYS_STRTIO_H
43	#include <sys/strtio.h>
44	#endif
45
46	#include "rdesktop.h"
47
48	#ifdef WITH_DEBUG_SERIAL
49	#define DEBUG_SERIAL(args) printf args;
50	#else
51	#define DEBUG_SERIAL(args) do {} while (0)
52	#endif
53
54	#define FILE_DEVICE_SERIAL_PORT 0x1b
55
56	#define SERIAL_SET_BAUD_RATE 1
57	#define SERIAL_SET_QUEUE_SIZE 2
58	#define SERIAL_SET_LINE_CONTROL 3
59	#define SERIAL_SET_BREAK_ON 4
60	#define SERIAL_SET_BREAK_OFF 5
61	#define SERIAL_IMMEDIATE_CHAR 6
62	#define SERIAL_SET_TIMEOUTS 7
63	#define SERIAL_GET_TIMEOUTS 8
64	#define SERIAL_SET_DTR 9
65	#define SERIAL_CLR_DTR 10
66	#define SERIAL_RESET_DEVICE 11
67	#define SERIAL_SET_RTS 12
68	#define SERIAL_CLR_RTS 13
69	#define SERIAL_SET_XOFF 14
70	#define SERIAL_SET_XON 15
71	#define SERIAL_GET_WAIT_MASK 16
72	#define SERIAL_SET_WAIT_MASK 17
73	#define SERIAL_WAIT_ON_MASK 18
74	#define SERIAL_PURGE 19
75	#define SERIAL_GET_BAUD_RATE 20
76	#define SERIAL_GET_LINE_CONTROL 21
77	#define SERIAL_GET_CHARS 22
78	#define SERIAL_SET_CHARS 23
79	#define SERIAL_GET_HANDFLOW 24
80	#define SERIAL_SET_HANDFLOW 25
81	#define SERIAL_GET_MODEMSTATUS 26
82	#define SERIAL_GET_COMMSTATUS 27
83	#define SERIAL_XOFF_COUNTER 28
84	#define SERIAL_GET_PROPERTIES 29
85	#define SERIAL_GET_DTRRTS 30
86	#define SERIAL_LSRMST_INSERT 31
87	#define SERIAL_CONFIG_SIZE 32
88	#define SERIAL_GET_COMMCONFIG 33
89	#define SERIAL_SET_COMMCONFIG 34
90	#define SERIAL_GET_STATS 35
91	#define SERIAL_CLEAR_STATS 36
92	#define SERIAL_GET_MODEM_CONTROL 37
93	#define SERIAL_SET_MODEM_CONTROL 38
94	#define SERIAL_SET_FIFO_CONTROL 39
95
96	#define STOP_BITS_1 0
97	#define STOP_BITS_2 2
98
99	#define NO_PARITY 0
100	#define ODD_PARITY 1
101	#define EVEN_PARITY 2
102
103	#define SERIAL_PURGE_TXABORT 0x00000001
104	#define SERIAL_PURGE_RXABORT 0x00000002
105	#define SERIAL_PURGE_TXCLEAR 0x00000004
106	#define SERIAL_PURGE_RXCLEAR 0x00000008
107
108	/* SERIAL_WAIT_ON_MASK */
109	#define SERIAL_EV_RXCHAR 0x0001 /* Any Character received */
110	#define SERIAL_EV_RXFLAG 0x0002 /* Received certain character */
111	#define SERIAL_EV_TXEMPTY 0x0004 /* Transmitt Queue Empty */
112	#define SERIAL_EV_CTS 0x0008 /* CTS changed state */
113	#define SERIAL_EV_DSR 0x0010 /* DSR changed state */
114	#define SERIAL_EV_RLSD 0x0020 /* RLSD changed state */
115	#define SERIAL_EV_BREAK 0x0040 /* BREAK received */
116	#define SERIAL_EV_ERR 0x0080 /* Line status error occurred */
117	#define SERIAL_EV_RING 0x0100 /* Ring signal detected */
118	#define SERIAL_EV_PERR 0x0200 /* Printer error occured */
119	#define SERIAL_EV_RX80FULL 0x0400 /* Receive buffer is 80 percent full */
120	#define SERIAL_EV_EVENT1 0x0800 /* Provider specific event 1 */
121	#define SERIAL_EV_EVENT2 0x1000 /* Provider specific event 2 */
122
123	/* Modem Status */
124	#define SERIAL_MS_DTR 0x01
125	#define SERIAL_MS_RTS 0x02
126	#define SERIAL_MS_CTS 0x10
127	#define SERIAL_MS_DSR 0x20
128	#define SERIAL_MS_RNG 0x40
129	#define SERIAL_MS_CAR 0x80
130
131	/* Handflow */
132	#define SERIAL_DTR_CONTROL 0x01
133	#define SERIAL_CTS_HANDSHAKE 0x08
134	#define SERIAL_ERROR_ABORT 0x80000000
135
136	#define SERIAL_XON_HANDSHAKE 0x01
137	#define SERIAL_XOFF_HANDSHAKE 0x02
138	#define SERIAL_DSR_SENSITIVITY 0x40
139
140	#define SERIAL_CHAR_EOF 0
141	#define SERIAL_CHAR_ERROR 1
142	#define SERIAL_CHAR_BREAK 2
143	#define SERIAL_CHAR_EVENT 3
144	#define SERIAL_CHAR_XON 4
145	#define SERIAL_CHAR_XOFF 5
146
147	#ifndef CRTSCTS
148	#define CRTSCTS 0
149	#endif
150
151	/* FIONREAD should really do the same thing as TIOCINQ, where it is
152	* not available */
153	#if !defined(TIOCINQ) && defined(FIONREAD)
154	#define TIOCINQ FIONREAD
155	#endif
156	#if !defined(TIOCOUTQ) && defined(FIONWRITE)
157	#define TIOCOUTQ FIONWRITE
158	#endif
159
160	extern RDPDR_DEVICE g_rdpdr_device[];
161
162	static SERIAL_DEVICE *
163	get_serial_info(RD_NTHANDLE handle)
164	{
165	int index;
166
167	for (index = 0; index < RDPDR_MAX_DEVICES; index++)
168	{
169	if (handle == g_rdpdr_device[index].handle)
170	return (SERIAL_DEVICE *) g_rdpdr_device[index].pdevice_data;
171	}
172	return NULL;
173	}
174
175	static RD_BOOL
176	get_termios(SERIAL_DEVICE * pser_inf, RD_NTHANDLE serial_fd)
177	{
178	speed_t speed;
179	struct termios *ptermios;
180
181	ptermios = pser_inf->ptermios;
182
183	if (tcgetattr(serial_fd, ptermios) == -1)
184	return False;
185
186	speed = cfgetispeed(ptermios);
187	switch (speed)
188	{
189	#ifdef B75
190	case B75:
191	pser_inf->baud_rate = 75;
192	break;
193	#endif
194	#ifdef B110
195	case B110:
196	pser_inf->baud_rate = 110;
197	break;
198	#endif
199	#ifdef B134
200	case B134:
201	pser_inf->baud_rate = 134;
202	break;
203	#endif
204	#ifdef B150
205	case B150:
206	pser_inf->baud_rate = 150;
207	break;
208	#endif
209	#ifdef B300
210	case B300:
211	pser_inf->baud_rate = 300;
212	break;
213	#endif
214	#ifdef B600
215	case B600:
216	pser_inf->baud_rate = 600;
217	break;
218	#endif
219	#ifdef B1200
220	case B1200:
221	pser_inf->baud_rate = 1200;
222	break;
223	#endif
224	#ifdef B1800
225	case B1800:
226	pser_inf->baud_rate = 1800;
227	break;
228	#endif
229	#ifdef B2400
230	case B2400:
231	pser_inf->baud_rate = 2400;
232	break;
233	#endif
234	#ifdef B4800
235	case B4800:
236	pser_inf->baud_rate = 4800;
237	break;
238	#endif
239	#ifdef B9600
240	case B9600:
241	pser_inf->baud_rate = 9600;
242	break;
243	#endif
244	#ifdef B19200
245	case B19200:
246	pser_inf->baud_rate = 19200;
247	break;
248	#endif
249	#ifdef B38400
250	case B38400:
251	pser_inf->baud_rate = 38400;
252	break;
253	#endif
254	#ifdef B57600
255	case B57600:
256	pser_inf->baud_rate = 57600;
257	break;
258	#endif
259	#ifdef B115200
260	case B115200:
261	pser_inf->baud_rate = 115200;
262	break;
263	#endif
264	#ifdef B230400
265	case B230400:
266	pser_inf->baud_rate = 230400;
267	break;
268	#endif
269	#ifdef B460800
270	case B460800:
271	pser_inf->baud_rate = 460800;
272	break;
273	#endif
274	default:
275	pser_inf->baud_rate = 9600;
276	break;
277	}
278
279	speed = cfgetospeed(ptermios);
280	pser_inf->dtr = (speed == B0) ? 0 : 1;
281
282	pser_inf->stop_bits = (ptermios->c_cflag & CSTOPB) ? STOP_BITS_2 : STOP_BITS_1;
283	pser_inf->parity =
284	(ptermios->
285	c_cflag & PARENB) ? ((ptermios->
286	c_cflag & PARODD) ? ODD_PARITY : EVEN_PARITY) : NO_PARITY;
287	switch (ptermios->c_cflag & CSIZE)
288	{
289	case CS5:
290	pser_inf->word_length = 5;
291	break;
292	case CS6:
293	pser_inf->word_length = 6;
294	break;
295	case CS7:
296	pser_inf->word_length = 7;
297	break;
298	default:
299	pser_inf->word_length = 8;
300	break;
301	}
302
303	if (ptermios->c_cflag & CRTSCTS)
304	{
305	pser_inf->control = SERIAL_DTR_CONTROL \| SERIAL_CTS_HANDSHAKE \| SERIAL_ERROR_ABORT;
306	}
307	else
308	{
309	pser_inf->control = SERIAL_DTR_CONTROL \| SERIAL_ERROR_ABORT;
310	}
311
312	pser_inf->xonoff = SERIAL_DSR_SENSITIVITY;
313	if (ptermios->c_iflag & IXON)
314	pser_inf->xonoff \|= SERIAL_XON_HANDSHAKE;
315
316	if (ptermios->c_iflag & IXOFF)
317	pser_inf->xonoff \|= SERIAL_XOFF_HANDSHAKE;
318
319	pser_inf->chars[SERIAL_CHAR_XON] = ptermios->c_cc[VSTART];
320	pser_inf->chars[SERIAL_CHAR_XOFF] = ptermios->c_cc[VSTOP];
321	pser_inf->chars[SERIAL_CHAR_EOF] = ptermios->c_cc[VEOF];
322	pser_inf->chars[SERIAL_CHAR_BREAK] = ptermios->c_cc[VINTR];
323	pser_inf->chars[SERIAL_CHAR_ERROR] = ptermios->c_cc[VKILL];
324
325	return True;
326	}
327
328	static void
329	set_termios(SERIAL_DEVICE * pser_inf, RD_NTHANDLE serial_fd)
330	{
331	speed_t speed;
332
333	struct termios *ptermios;
334
335	ptermios = pser_inf->ptermios;
336
337
338	switch (pser_inf->baud_rate)
339	{
340	#ifdef B75
341	case 75:
342	speed = B75;
343	break;
344	#endif
345	#ifdef B110
346	case 110:
347	speed = B110;
348	break;
349	#endif
350	#ifdef B134
351	case 134:
352	speed = B134;
353	break;
354	#endif
355	#ifdef B150
356	case 150:
357	speed = B150;
358	break;
359	#endif
360	#ifdef B300
361	case 300:
362	speed = B300;
363	break;
364	#endif
365	#ifdef B600
366	case 600:
367	speed = B600;
368	break;
369	#endif
370	#ifdef B1200
371	case 1200:
372	speed = B1200;
373	break;
374	#endif
375	#ifdef B1800
376	case 1800:
377	speed = B1800;
378	break;
379	#endif
380	#ifdef B2400
381	case 2400:
382	speed = B2400;
383	break;
384	#endif
385	#ifdef B4800
386	case 4800:
387	speed = B4800;
388	break;
389	#endif
390	#ifdef B9600
391	case 9600:
392	speed = B9600;
393	break;
394	#endif
395	#ifdef B19200
396	case 19200:
397	speed = B19200;
398	break;
399	#endif
400	#ifdef B38400
401	case 38400:
402	speed = B38400;
403	break;
404	#endif
405	#ifdef B57600
406	case 57600:
407	speed = B57600;
408	break;
409	#endif
410	#ifdef B115200
411	case 115200:
412	speed = B115200;
413	break;
414	#endif
415	#ifdef B230400
416	case 230400:
417	speed = B115200;
418	break;
419	#endif
420	#ifdef B460800
421	case 460800:
422	speed = B115200;
423	break;
424	#endif
425	default:
426	speed = B9600;
427	break;
428	}
429
430	#ifdef CBAUD
431	ptermios->c_cflag &= ~CBAUD;
432	ptermios->c_cflag \|= speed;
433	#else
434	/* on systems with separate ispeed and ospeed, we can remember the speed
435	in ispeed while changing DTR with ospeed */
436	cfsetispeed(pser_inf->ptermios, speed);
437	cfsetospeed(pser_inf->ptermios, pser_inf->dtr ? speed : 0);
438	#endif
439
440	ptermios->c_cflag &= ~(CSTOPB \| PARENB \| PARODD \| CSIZE \| CRTSCTS);
441	switch (pser_inf->stop_bits)
442	{
443	case STOP_BITS_2:
444	ptermios->c_cflag \|= CSTOPB;
445	break;
446	default:
447	ptermios->c_cflag &= ~CSTOPB;
448	break;
449	}
450
451	switch (pser_inf->parity)
452	{
453	case EVEN_PARITY:
454	ptermios->c_cflag \|= PARENB;
455	break;
456	case ODD_PARITY:
457	ptermios->c_cflag \|= PARENB \| PARODD;
458	break;
459	case NO_PARITY:
460	ptermios->c_cflag &= ~(PARENB \| PARODD);
461	break;
462	}
463
464	switch (pser_inf->word_length)
465	{
466	case 5:
467	ptermios->c_cflag \|= CS5;
468	break;
469	case 6:
470	ptermios->c_cflag \|= CS6;
471	break;
472	case 7:
473	ptermios->c_cflag \|= CS7;
474	break;
475	default:
476	ptermios->c_cflag \|= CS8;
477	break;
478	}
479
480	#if 0
481	if (pser_inf->rts)
482	ptermios->c_cflag \|= CRTSCTS;
483	else
484	ptermios->c_cflag &= ~CRTSCTS;
485	#endif
486
487	if (pser_inf->control & SERIAL_CTS_HANDSHAKE)
488	{
489	ptermios->c_cflag \|= CRTSCTS;
490	}
491	else
492	{
493	ptermios->c_cflag &= ~CRTSCTS;
494	}
495
496
497	if (pser_inf->xonoff & SERIAL_XON_HANDSHAKE)
498	{
499	ptermios->c_iflag \|= IXON \| IMAXBEL;
500	}
501	if (pser_inf->xonoff & SERIAL_XOFF_HANDSHAKE)
502	{
503	ptermios->c_iflag \|= IXOFF \| IMAXBEL;
504	}
505
506	if ((pser_inf->xonoff & (SERIAL_XOFF_HANDSHAKE \| SERIAL_XON_HANDSHAKE)) == 0)
507	{
508	ptermios->c_iflag &= ~IXON;
509	ptermios->c_iflag &= ~IXOFF;
510	}
511
512	ptermios->c_cc[VSTART] = pser_inf->chars[SERIAL_CHAR_XON];
513	ptermios->c_cc[VSTOP] = pser_inf->chars[SERIAL_CHAR_XOFF];
514	ptermios->c_cc[VEOF] = pser_inf->chars[SERIAL_CHAR_EOF];
515	ptermios->c_cc[VINTR] = pser_inf->chars[SERIAL_CHAR_BREAK];
516	ptermios->c_cc[VKILL] = pser_inf->chars[SERIAL_CHAR_ERROR];
517
518	tcsetattr(serial_fd, TCSANOW, ptermios);
519	}
520
521	/* Enumeration of devices from rdesktop.c */
522	/* returns numer of units found and initialized. */
523	/* optarg looks like ':com1=/dev/ttyS0' */
524	/* when it arrives to this function. */
525	/* :com1=/dev/ttyS0,com2=/dev/ttyS1 */
526	int
527	serial_enum_devices(uint32 * id, char *optarg)
528	{
529	SERIAL_DEVICE *pser_inf;
530
531	char *pos = optarg;
532	char *pos2;
533	int count = 0;
534
535	/* skip the first colon */
536	optarg++;
537	while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)
538	{
539	/* Init data structures for device */
540	pser_inf = (SERIAL_DEVICE *) xmalloc(sizeof(SERIAL_DEVICE));
541	pser_inf->ptermios = (struct termios *) xmalloc(sizeof(struct termios));
542	memset(pser_inf->ptermios, 0, sizeof(struct termios));
543	pser_inf->pold_termios = (struct termios *) xmalloc(sizeof(struct termios));
544	memset(pser_inf->pold_termios, 0, sizeof(struct termios));
545
546	pos2 = next_arg(optarg, '=');
547	strcpy(g_rdpdr_device[*id].name, optarg);
548
549	toupper_str(g_rdpdr_device[*id].name);
550
551	g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1);
552	strcpy(g_rdpdr_device[*id].local_path, pos2);
553	printf("SERIAL %s to %s\n", g_rdpdr_device[*id].name,
554	g_rdpdr_device[*id].local_path);
555	/* set device type */
556	g_rdpdr_device[*id].device_type = DEVICE_TYPE_SERIAL;
557	g_rdpdr_device[id].pdevice_data = (void ) pser_inf;
558	count++;
559	(*id)++;
560
561	optarg = pos;
562	}
563	return count;
564	}
565
566	static RD_NTSTATUS
567	serial_create(uint32 device_id, uint32 access, uint32 share_mode, uint32 disposition,
568	uint32 flags_and_attributes, char filename, RD_NTHANDLE handle)
569	{
570	RD_NTHANDLE serial_fd;
571	SERIAL_DEVICE *pser_inf;
572	struct termios *ptermios;
573
574	pser_inf = (SERIAL_DEVICE *) g_rdpdr_device[device_id].pdevice_data;
575	ptermios = pser_inf->ptermios;
576	serial_fd = open(g_rdpdr_device[device_id].local_path, O_RDWR \| O_NOCTTY \| O_NONBLOCK);
577
578	if (serial_fd == -1)
579	{
580	perror("open");
581	return RD_STATUS_ACCESS_DENIED;
582	}
583
584	if (!get_termios(pser_inf, serial_fd))
585	{
586	printf("INFO: SERIAL %s access denied\n", g_rdpdr_device[device_id].name);
587	fflush(stdout);
588	return RD_STATUS_ACCESS_DENIED;
589	}
590
591	/* Store handle for later use */
592	g_rdpdr_device[device_id].handle = serial_fd;
593
594	/* some sane information */
595	DEBUG_SERIAL(("INFO: SERIAL %s to %s\nINFO: speed %u baud, stop bits %u, parity %u, word length %u bits, dtr %u, rts %u\n", g_rdpdr_device[device_id].name, g_rdpdr_device[device_id].local_path, pser_inf->baud_rate, pser_inf->stop_bits, pser_inf->parity, pser_inf->word_length, pser_inf->dtr, pser_inf->rts));
596
597	pser_inf->ptermios->c_iflag &=
598	~(IGNBRK \| BRKINT \| PARMRK \| ISTRIP \| INLCR \| IGNCR \| ICRNL \| IXON);
599	pser_inf->ptermios->c_oflag &= ~OPOST;
600	pser_inf->ptermios->c_lflag &= ~(ECHO \| ECHONL \| ICANON \| ISIG \| IEXTEN);
601	pser_inf->ptermios->c_cflag &= ~(CSIZE \| PARENB);
602	pser_inf->ptermios->c_cflag \|= CS8;
603
604	tcsetattr(serial_fd, TCSANOW, pser_inf->ptermios);
605
606	pser_inf->event_txempty = 0;
607	pser_inf->event_cts = 0;
608	pser_inf->event_dsr = 0;
609	pser_inf->event_rlsd = 0;
610	pser_inf->event_pending = 0;
611
612	*handle = serial_fd;
613
614	/* all read and writes should be non blocking */
615	if (fcntl(*handle, F_SETFL, O_NONBLOCK) == -1)
616	perror("fcntl");
617
618	pser_inf->read_total_timeout_constant = 5;
619
620	return RD_STATUS_SUCCESS;
621	}
622
623	static RD_NTSTATUS
624	serial_close(RD_NTHANDLE handle)
625	{
626	int i = get_device_index(handle);
627	if (i >= 0)
628	g_rdpdr_device[i].handle = 0;
629
630	rdpdr_abort_io(handle, 0, RD_STATUS_TIMEOUT);
631	close(handle);
632	return RD_STATUS_SUCCESS;
633	}
634
635	static RD_NTSTATUS
636	serial_read(RD_NTHANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
637	{
638	long timeout;
639	SERIAL_DEVICE *pser_inf;
640	struct termios *ptermios;
641	#ifdef WITH_DEBUG_SERIAL
642	int bytes_inqueue;
643	#endif
644
645
646	timeout = 90;
647	pser_inf = get_serial_info(handle);
648	ptermios = pser_inf->ptermios;
649
650	/* Set timeouts kind of like the windows serial timeout parameters. Multiply timeout
651	with requested read size */
652	if (pser_inf->read_total_timeout_multiplier \| pser_inf->read_total_timeout_constant)
653	{
654	timeout =
655	(pser_inf->read_total_timeout_multiplier * length +
656	pser_inf->read_total_timeout_constant + 99) / 100;
657	}
658	else if (pser_inf->read_interval_timeout)
659	{
660	timeout = (pser_inf->read_interval_timeout * length + 99) / 100;
661	}
662
663	/* If a timeout is set, do a blocking read, which times out after some time.
664	It will make rdesktop less responsive, but it will improve serial performance, by not
665	reading one character at a time. */
666	if (timeout == 0)
667	{
668	ptermios->c_cc[VTIME] = 0;
669	ptermios->c_cc[VMIN] = 0;
670	}
671	else
672	{
673	ptermios->c_cc[VTIME] = timeout;
674	ptermios->c_cc[VMIN] = 1;
675	}
676	tcsetattr(handle, TCSANOW, ptermios);
677
678	#if defined(WITH_DEBUG_SERIAL) && defined(TIOCINQ)
679	ioctl(handle, TIOCINQ, &bytes_inqueue);
680	DEBUG_SERIAL(("serial_read inqueue: %d expected %d\n", bytes_inqueue, length));
681	#endif
682
683	*result = read(handle, data, length);
684
685	#ifdef WITH_DEBUG_SERIAL
686	DEBUG_SERIAL(("serial_read Bytes %d\n", *result));
687	if (*result > 0)
688	hexdump(data, *result);
689	#endif
690
691	return RD_STATUS_SUCCESS;
692	}
693
694	static RD_NTSTATUS
695	serial_write(RD_NTHANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
696	{
697	SERIAL_DEVICE *pser_inf;
698
699	pser_inf = get_serial_info(handle);
700
701	*result = write(handle, data, length);
702
703	if (*result > 0)
704	pser_inf->event_txempty = *result;
705
706	DEBUG_SERIAL(("serial_write length %d, offset %d result %d\n", length, offset, *result));
707
708	return RD_STATUS_SUCCESS;
709	}
710
711	static RD_NTSTATUS
712	serial_device_control(RD_NTHANDLE handle, uint32 request, STREAM in, STREAM out)
713	{
714	int flush_mask, purge_mask;
715	uint32 result, modemstate;
716	uint8 immediate;
717	SERIAL_DEVICE *pser_inf;
718	struct termios *ptermios;
719
720	if ((request >> 16) != FILE_DEVICE_SERIAL_PORT)
721	return RD_STATUS_INVALID_PARAMETER;
722
723	pser_inf = get_serial_info(handle);
724	ptermios = pser_inf->ptermios;
725
726	/* extract operation */
727	request >>= 2;
728	request &= 0xfff;
729
730	switch (request)
731	{
732	case SERIAL_SET_BAUD_RATE:
733	in_uint32_le(in, pser_inf->baud_rate);
734	set_termios(pser_inf, handle);
735	DEBUG_SERIAL(("serial_ioctl -> SERIAL_SET_BAUD_RATE %d\n",
736	pser_inf->baud_rate));
737	break;
738	case SERIAL_GET_BAUD_RATE:
739	out_uint32_le(out, pser_inf->baud_rate);
740	DEBUG_SERIAL(("serial_ioctl -> SERIAL_GET_BAUD_RATE %d\n",
741	pser_inf->baud_rate));
742	break;
743	case SERIAL_SET_QUEUE_SIZE:
744	in_uint32_le(in, pser_inf->queue_in_size);
745	in_uint32_le(in, pser_inf->queue_out_size);
746	DEBUG_SERIAL(("serial_ioctl -> SERIAL_SET_QUEUE_SIZE in %d out %d\n",
747	pser_inf->queue_in_size, pser_inf->queue_out_size));
748	break;
749	case SERIAL_SET_LINE_CONTROL:
750	in_uint8(in, pser_inf->stop_bits);
751	in_uint8(in, pser_inf->parity);
752	in_uint8(in, pser_inf->word_length);
753	set_termios(pser_inf, handle);
754	DEBUG_SERIAL(("serial_ioctl -> SERIAL_SET_LINE_CONTROL stop %d parity %d word %d\n", pser_inf->stop_bits, pser_inf->parity, pser_inf->word_length));
755	break;
756	case SERIAL_GET_LINE_CONTROL:
757	DEBUG_SERIAL(("serial_ioctl -> SERIAL_GET_LINE_CONTROL\n"));
758	out_uint8(out, pser_inf->stop_bits);
759	out_uint8(out, pser_inf->parity);
760	out_uint8(out, pser_inf->word_length);
761	break;
762	case SERIAL_IMMEDIATE_CHAR:
763	DEBUG_SERIAL(("serial_ioctl -> SERIAL_IMMEDIATE_CHAR\n"));
764	in_uint8(in, immediate);
765	serial_write(handle, &immediate, 1, 0, &result);
766	break;
767	case SERIAL_CONFIG_SIZE:
768	DEBUG_SERIAL(("serial_ioctl -> SERIAL_CONFIG_SIZE\n"));
769	out_uint32_le(out, 0);
770	break;
771	case SERIAL_GET_CHARS:
772	DEBUG_SERIAL(("serial_ioctl -> SERIAL_GET_CHARS\n"));
773	out_uint8a(out, pser_inf->chars, 6);
774	break;
775	case SERIAL_SET_CHARS:
776	DEBUG_SERIAL(("serial_ioctl -> SERIAL_SET_CHARS\n"));
777	in_uint8a(in, pser_inf->chars, 6);
778	#ifdef WITH_DEBUG_SERIAL
779	hexdump(pser_inf->chars, 6);
780	#endif
781	set_termios(pser_inf, handle);
782	break;
783	case SERIAL_GET_HANDFLOW:
784	DEBUG_SERIAL(("serial_ioctl -> SERIAL_GET_HANDFLOW\n"));
785	get_termios(pser_inf, handle);
786	out_uint32_le(out, pser_inf->control);
787	out_uint32_le(out, pser_inf->xonoff); /* Xon/Xoff */
788	out_uint32_le(out, pser_inf->onlimit);
789	out_uint32_le(out, pser_inf->offlimit);
790	break;
791	case SERIAL_SET_HANDFLOW:
792	in_uint32_le(in, pser_inf->control);
793	in_uint32_le(in, pser_inf->xonoff);
794	in_uint32_le(in, pser_inf->onlimit);
795	in_uint32_le(in, pser_inf->offlimit);
796	DEBUG_SERIAL(("serial_ioctl -> SERIAL_SET_HANDFLOW %x %x %x %x\n",
797	pser_inf->control, pser_inf->xonoff, pser_inf->onlimit,
798	pser_inf->onlimit));
799	set_termios(pser_inf, handle);
800	break;
801	case SERIAL_SET_TIMEOUTS:
802	in_uint32(in, pser_inf->read_interval_timeout);
803	in_uint32(in, pser_inf->read_total_timeout_multiplier);
804	in_uint32(in, pser_inf->read_total_timeout_constant);
805	in_uint32(in, pser_inf->write_total_timeout_multiplier);
806	in_uint32(in, pser_inf->write_total_timeout_constant);
807	DEBUG_SERIAL(("serial_ioctl -> SERIAL_SET_TIMEOUTS read timeout %d %d %d\n",
808	pser_inf->read_interval_timeout,
809	pser_inf->read_total_timeout_multiplier,
810	pser_inf->read_total_timeout_constant));
811	break;
812	case SERIAL_GET_TIMEOUTS:
813	DEBUG_SERIAL(("serial_ioctl -> SERIAL_GET_TIMEOUTS read timeout %d %d %d\n",
814	pser_inf->read_interval_timeout,
815	pser_inf->read_total_timeout_multiplier,
816	pser_inf->read_total_timeout_constant));
817
818	out_uint32(out, pser_inf->read_interval_timeout);
819	out_uint32(out, pser_inf->read_total_timeout_multiplier);
820	out_uint32(out, pser_inf->read_total_timeout_constant);
821	out_uint32(out, pser_inf->write_total_timeout_multiplier);
822	out_uint32(out, pser_inf->write_total_timeout_constant);
823	break;
824	case SERIAL_GET_WAIT_MASK:
825	DEBUG_SERIAL(("serial_ioctl -> SERIAL_GET_WAIT_MASK %X\n",
826	pser_inf->wait_mask));
827	out_uint32(out, pser_inf->wait_mask);
828	break;
829	case SERIAL_SET_WAIT_MASK:
830	in_uint32(in, pser_inf->wait_mask);
831	DEBUG_SERIAL(("serial_ioctl -> SERIAL_SET_WAIT_MASK %X\n",
832	pser_inf->wait_mask));
833	break;
834	case SERIAL_SET_DTR:
835	DEBUG_SERIAL(("serial_ioctl -> SERIAL_SET_DTR\n"));
836	ioctl(handle, TIOCMGET, &result);
837	result \|= TIOCM_DTR;
838	ioctl(handle, TIOCMSET, &result);
839	pser_inf->dtr = 1;
840	break;
841	case SERIAL_CLR_DTR:
842	DEBUG_SERIAL(("serial_ioctl -> SERIAL_CLR_DTR\n"));
843	ioctl(handle, TIOCMGET, &result);
844	result &= ~TIOCM_DTR;
845	ioctl(handle, TIOCMSET, &result);
846	pser_inf->dtr = 0;
847	break;
848	case SERIAL_SET_RTS:
849	DEBUG_SERIAL(("serial_ioctl -> SERIAL_SET_RTS\n"));
850	ioctl(handle, TIOCMGET, &result);
851	result \|= TIOCM_RTS;
852	ioctl(handle, TIOCMSET, &result);
853	pser_inf->rts = 1;
854	break;
855	case SERIAL_CLR_RTS:
856	DEBUG_SERIAL(("serial_ioctl -> SERIAL_CLR_RTS\n"));
857	ioctl(handle, TIOCMGET, &result);
858	result &= ~TIOCM_RTS;
859	ioctl(handle, TIOCMSET, &result);
860	pser_inf->rts = 0;
861	break;
862	case SERIAL_GET_MODEMSTATUS:
863	modemstate = 0;
864	#ifdef TIOCMGET
865	ioctl(handle, TIOCMGET, &result);
866	if (result & TIOCM_CTS)
867	modemstate \|= SERIAL_MS_CTS;
868	if (result & TIOCM_DSR)
869	modemstate \|= SERIAL_MS_DSR;
870	if (result & TIOCM_RNG)
871	modemstate \|= SERIAL_MS_RNG;
872	if (result & TIOCM_CAR)
873	modemstate \|= SERIAL_MS_CAR;
874	if (result & TIOCM_DTR)
875	modemstate \|= SERIAL_MS_DTR;
876	if (result & TIOCM_RTS)
877	modemstate \|= SERIAL_MS_RTS;
878	#endif
879	DEBUG_SERIAL(("serial_ioctl -> SERIAL_GET_MODEMSTATUS %X\n", modemstate));
880	out_uint32_le(out, modemstate);
881	break;
882	case SERIAL_GET_COMMSTATUS:
883	out_uint32_le(out, 0); /* Errors */
884	out_uint32_le(out, 0); /* Hold reasons */
885
886	result = 0;
887	#ifdef TIOCINQ
888	ioctl(handle, TIOCINQ, &result);
889	#endif
890	out_uint32_le(out, result); /* Amount in in queue */
891	if (result)
892	DEBUG_SERIAL(("serial_ioctl -> SERIAL_GET_COMMSTATUS in queue %d\n",
893	result));
894
895	result = 0;
896	#ifdef TIOCOUTQ
897	ioctl(handle, TIOCOUTQ, &result);
898	#endif
899	out_uint32_le(out, result); /* Amount in out queue */
900	if (result)
901	DEBUG_SERIAL(("serial_ioctl -> SERIAL_GET_COMMSTATUS out queue %d\n", result));
902
903	out_uint8(out, 0); /* EofReceived */
904	out_uint8(out, 0); /* WaitForImmediate */
905	break;
906	case SERIAL_PURGE:
907	in_uint32(in, purge_mask);
908	DEBUG_SERIAL(("serial_ioctl -> SERIAL_PURGE purge_mask %X\n", purge_mask));
909	flush_mask = 0;
910	if (purge_mask & SERIAL_PURGE_TXCLEAR)
911	flush_mask \|= TCOFLUSH;
912	if (purge_mask & SERIAL_PURGE_RXCLEAR)
913	flush_mask \|= TCIFLUSH;
914	if (flush_mask != 0)
915	tcflush(handle, flush_mask);
916	if (purge_mask & SERIAL_PURGE_TXABORT)
917	rdpdr_abort_io(handle, 4, RD_STATUS_CANCELLED);
918	if (purge_mask & SERIAL_PURGE_RXABORT)
919	rdpdr_abort_io(handle, 3, RD_STATUS_CANCELLED);
920	break;
921	case SERIAL_WAIT_ON_MASK:
922	DEBUG_SERIAL(("serial_ioctl -> SERIAL_WAIT_ON_MASK %X\n",
923	pser_inf->wait_mask));
924	pser_inf->event_pending = 1;
925	if (serial_get_event(handle, &result))
926	{
927	DEBUG_SERIAL(("WAIT end event = %x\n", result));
928	out_uint32_le(out, result);
929	break;
930	}
931	return RD_STATUS_PENDING;
932	break;
933	case SERIAL_SET_BREAK_ON:
934	DEBUG_SERIAL(("serial_ioctl -> SERIAL_SET_BREAK_ON\n"));
935	tcsendbreak(handle, 0);
936	break;
937	case SERIAL_RESET_DEVICE:
938	DEBUG_SERIAL(("serial_ioctl -> SERIAL_RESET_DEVICE\n"));
939	break;
940	case SERIAL_SET_BREAK_OFF:
941	DEBUG_SERIAL(("serial_ioctl -> SERIAL_SET_BREAK_OFF\n"));
942	break;
943	case SERIAL_SET_XOFF:
944	DEBUG_SERIAL(("serial_ioctl -> SERIAL_SET_XOFF\n"));
945	break;
946	case SERIAL_SET_XON:
947	DEBUG_SERIAL(("serial_ioctl -> SERIAL_SET_XON\n"));
948	tcflow(handle, TCION);
949	break;
950	default:
951	unimpl("SERIAL IOCTL %d\n", request);
952	return RD_STATUS_INVALID_PARAMETER;
953	}
954
955	return RD_STATUS_SUCCESS;
956	}
957
958	RD_BOOL
959	serial_get_event(RD_NTHANDLE handle, uint32 * result)
960	{
961	int index;
962	SERIAL_DEVICE *pser_inf;
963	int bytes;
964	RD_BOOL ret = False;
965
966	*result = 0;
967	index = get_device_index(handle);
968	if (index < 0)
969	return False;
970
971	#ifdef TIOCINQ
972	pser_inf = (SERIAL_DEVICE *) g_rdpdr_device[index].pdevice_data;
973
974	ioctl(handle, TIOCINQ, &bytes);
975
976	if (bytes > 0)
977	{
978	DEBUG_SERIAL(("serial_get_event Bytes %d\n", bytes));
979	if (bytes > pser_inf->event_rlsd)
980	{
981	pser_inf->event_rlsd = bytes;
982	if (pser_inf->wait_mask & SERIAL_EV_RLSD)
983	{
984	DEBUG_SERIAL(("Event -> SERIAL_EV_RLSD \n"));
985	*result \|= SERIAL_EV_RLSD;
986	ret = True;
987	}
988
989	}
990
991	if ((bytes > 1) && (pser_inf->wait_mask & SERIAL_EV_RXFLAG))
992	{
993	DEBUG_SERIAL(("Event -> SERIAL_EV_RXFLAG Bytes %d\n", bytes));
994	*result \|= SERIAL_EV_RXFLAG;
995	ret = True;
996	}
997	if ((pser_inf->wait_mask & SERIAL_EV_RXCHAR))
998	{
999	DEBUG_SERIAL(("Event -> SERIAL_EV_RXCHAR Bytes %d\n", bytes));
1000	*result \|= SERIAL_EV_RXCHAR;
1001	ret = True;
1002	}
1003
1004	}
1005	else
1006	{
1007	pser_inf->event_rlsd = 0;
1008	}
1009	#endif
1010
1011	#ifdef TIOCOUTQ
1012	ioctl(handle, TIOCOUTQ, &bytes);
1013	if ((bytes == 0)
1014	&& (pser_inf->event_txempty > 0) && (pser_inf->wait_mask & SERIAL_EV_TXEMPTY))
1015	{
1016
1017	DEBUG_SERIAL(("Event -> SERIAL_EV_TXEMPTY\n"));
1018	*result \|= SERIAL_EV_TXEMPTY;
1019	ret = True;
1020	}
1021	pser_inf->event_txempty = bytes;
1022	#endif
1023
1024	ioctl(handle, TIOCMGET, &bytes);
1025	if ((bytes & TIOCM_DSR) != pser_inf->event_dsr)
1026	{
1027	pser_inf->event_dsr = bytes & TIOCM_DSR;
1028	if (pser_inf->wait_mask & SERIAL_EV_DSR)
1029	{
1030	DEBUG_SERIAL(("event -> SERIAL_EV_DSR %s\n",
1031	(bytes & TIOCM_DSR) ? "ON" : "OFF"));
1032	*result \|= SERIAL_EV_DSR;
1033	ret = True;
1034	}
1035	}
1036
1037	if ((bytes & TIOCM_CTS) != pser_inf->event_cts)
1038	{
1039	pser_inf->event_cts = bytes & TIOCM_CTS;
1040	if (pser_inf->wait_mask & SERIAL_EV_CTS)
1041	{
1042	DEBUG_SERIAL((" EVENT-> SERIAL_EV_CTS %s\n",
1043	(bytes & TIOCM_CTS) ? "ON" : "OFF"));
1044	*result \|= SERIAL_EV_CTS;
1045	ret = True;
1046	}
1047	}
1048
1049	if (ret)
1050	pser_inf->event_pending = 0;
1051
1052	return ret;
1053	}
1054
1055	/* Read timeout for a given file descripter (device) when adding fd's to select() */
1056	RD_BOOL
1057	serial_get_timeout(RD_NTHANDLE handle, uint32 length, uint32 * timeout, uint32 * itv_timeout)
1058	{
1059	int index;
1060	SERIAL_DEVICE *pser_inf;
1061
1062	index = get_device_index(handle);
1063	if (index < 0)
1064	return True;
1065
1066	if (g_rdpdr_device[index].device_type != DEVICE_TYPE_SERIAL)
1067	{
1068	return False;
1069	}
1070
1071	pser_inf = (SERIAL_DEVICE *) g_rdpdr_device[index].pdevice_data;
1072
1073	*timeout =
1074	pser_inf->read_total_timeout_multiplier * length +
1075	pser_inf->read_total_timeout_constant;
1076	*itv_timeout = pser_inf->read_interval_timeout;
1077	return True;
1078	}
1079
1080	DEVICE_FNS serial_fns = {
1081	serial_create,
1082	serial_close,
1083	serial_read,
1084	serial_write,
1085	serial_device_control
1086	};

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source: vbox/trunk/src/VBox/RDP/client/serial.c@ 33889

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