1 |
#include <unistd.h> |
2 |
#include <fcntl.h> |
3 |
#include <termios.h> |
4 |
#include <strings.h> |
5 |
#include "rdesktop.h" |
6 |
|
7 |
#define FILE_DEVICE_SERIAL_PORT 0x1b |
8 |
|
9 |
#define SERIAL_SET_BAUD_RATE 1 |
10 |
#define SERIAL_SET_QUEUE_SIZE 2 |
11 |
#define SERIAL_SET_LINE_CONTROL 3 |
12 |
#define SERIAL_SET_BREAK_ON 4 |
13 |
#define SERIAL_SET_BREAK_OFF 5 |
14 |
#define SERIAL_IMMEDIATE_CHAR 6 |
15 |
#define SERIAL_SET_TIMEOUTS 7 |
16 |
#define SERIAL_GET_TIMEOUTS 8 |
17 |
#define SERIAL_SET_DTR 9 |
18 |
#define SERIAL_CLR_DTR 10 |
19 |
#define SERIAL_RESET_DEVICE 11 |
20 |
#define SERIAL_SET_RTS 12 |
21 |
#define SERIAL_CLR_RTS 13 |
22 |
#define SERIAL_SET_XOFF 14 |
23 |
#define SERIAL_SET_XON 15 |
24 |
#define SERIAL_GET_WAIT_MASK 16 |
25 |
#define SERIAL_SET_WAIT_MASK 17 |
26 |
#define SERIAL_WAIT_ON_MASK 18 |
27 |
#define SERIAL_PURGE 19 |
28 |
#define SERIAL_GET_BAUD_RATE 20 |
29 |
#define SERIAL_GET_LINE_CONTROL 21 |
30 |
#define SERIAL_GET_CHARS 22 |
31 |
#define SERIAL_SET_CHARS 23 |
32 |
#define SERIAL_GET_HANDFLOW 24 |
33 |
#define SERIAL_SET_HANDFLOW 25 |
34 |
#define SERIAL_GET_MODEMSTATUS 26 |
35 |
#define SERIAL_GET_COMMSTATUS 27 |
36 |
#define SERIAL_XOFF_COUNTER 28 |
37 |
#define SERIAL_GET_PROPERTIES 29 |
38 |
#define SERIAL_GET_DTRRTS 30 |
39 |
#define SERIAL_LSRMST_INSERT 31 |
40 |
#define SERIAL_CONFIG_SIZE 32 |
41 |
#define SERIAL_GET_COMMCONFIG 33 |
42 |
#define SERIAL_SET_COMMCONFIG 34 |
43 |
#define SERIAL_GET_STATS 35 |
44 |
#define SERIAL_CLEAR_STATS 36 |
45 |
#define SERIAL_GET_MODEM_CONTROL 37 |
46 |
#define SERIAL_SET_MODEM_CONTROL 38 |
47 |
#define SERIAL_SET_FIFO_CONTROL 39 |
48 |
|
49 |
#define STOP_BITS_1 0 |
50 |
#define STOP_BITS_2 2 |
51 |
|
52 |
#define NO_PARITY 0 |
53 |
#define ODD_PARITY 1 |
54 |
#define EVEN_PARITY 2 |
55 |
|
56 |
extern RDPDR_DEVICE g_rdpdr_device[]; |
57 |
|
58 |
int serial_fd; |
59 |
struct termios termios; |
60 |
|
61 |
int dtr; |
62 |
uint32 baud_rate; |
63 |
uint32 queue_in_size, queue_out_size; |
64 |
uint32 wait_mask; |
65 |
uint8 stop_bits, parity, word_length; |
66 |
|
67 |
SERIAL_DEVICE * get_serial_info(HANDLE handle) |
68 |
{ |
69 |
int index; |
70 |
|
71 |
for (index = 0; index < RDPDR_MAX_DEVICES; index++) |
72 |
{ |
73 |
if (handle == g_rdpdr_device[index].handle) |
74 |
return (SERIAL_DEVICE *) g_rdpdr_device[index].pdevice_data; |
75 |
} |
76 |
return NULL; |
77 |
} |
78 |
|
79 |
BOOL |
80 |
get_termios(SERIAL_DEVICE * pser_inf, HANDLE serial_fd) |
81 |
{ |
82 |
speed_t speed; |
83 |
struct termios *ptermios; |
84 |
|
85 |
ptermios = pser_inf->ptermios; |
86 |
|
87 |
if (tcgetattr(serial_fd, ptermios) == -1) |
88 |
return False; |
89 |
|
90 |
speed = cfgetispeed(ptermios); |
91 |
switch (speed) |
92 |
{ |
93 |
#ifdef B75 |
94 |
case B75: |
95 |
pser_inf->baud_rate = 75; |
96 |
break; |
97 |
#endif |
98 |
#ifdef B110 |
99 |
case B110: |
100 |
pser_inf->baud_rate = 110; |
101 |
break; |
102 |
#endif |
103 |
#ifdef B134 |
104 |
case B134: |
105 |
pser_inf->baud_rate = 134; |
106 |
break; |
107 |
#endif |
108 |
#ifdef B150 |
109 |
case B150: |
110 |
pser_inf->baud_rate = 150; |
111 |
break; |
112 |
#endif |
113 |
#ifdef B300 |
114 |
case B300: |
115 |
pser_inf->baud_rate = 300; |
116 |
break; |
117 |
#endif |
118 |
#ifdef B600 |
119 |
case B600: |
120 |
pser_inf->baud_rate = 600; |
121 |
break; |
122 |
#endif |
123 |
#ifdef B1200 |
124 |
case B1200: |
125 |
pser_inf->baud_rate = 1200; |
126 |
break; |
127 |
#endif |
128 |
#ifdef B1800 |
129 |
case B1800: |
130 |
pser_inf->baud_rate = 1800; |
131 |
break; |
132 |
#endif |
133 |
#ifdef B2400 |
134 |
case B2400: |
135 |
pser_inf->baud_rate = 2400; |
136 |
break; |
137 |
#endif |
138 |
#ifdef B4800 |
139 |
case B4800: |
140 |
pser_inf->baud_rate = 4800; |
141 |
break; |
142 |
#endif |
143 |
#ifdef B9600 |
144 |
case B9600: |
145 |
pser_inf->baud_rate = 9600; |
146 |
break; |
147 |
#endif |
148 |
#ifdef B19200 |
149 |
case B19200: |
150 |
pser_inf->baud_rate = 19200; |
151 |
break; |
152 |
#endif |
153 |
#ifdef B38400 |
154 |
case B38400: |
155 |
pser_inf->baud_rate = 38400; |
156 |
break; |
157 |
#endif |
158 |
#ifdef B57600 |
159 |
case B57600: |
160 |
pser_inf->baud_rate = 57600; |
161 |
break; |
162 |
#endif |
163 |
#ifdef B115200 |
164 |
case B115200: |
165 |
pser_inf->baud_rate = 115200; |
166 |
break; |
167 |
#endif |
168 |
default: |
169 |
pser_inf->baud_rate = 0; |
170 |
break; |
171 |
} |
172 |
|
173 |
speed = cfgetospeed(ptermios); |
174 |
pser_inf->dtr = (speed == B0) ? 0 : 1; |
175 |
|
176 |
pser_inf->stop_bits = (ptermios->c_cflag & CSTOPB) ? STOP_BITS_2 : STOP_BITS_1; |
177 |
pser_inf->parity = |
178 |
(ptermios-> |
179 |
c_cflag & PARENB) ? ((ptermios-> |
180 |
c_cflag & PARODD) ? ODD_PARITY : EVEN_PARITY) : NO_PARITY; |
181 |
switch (ptermios->c_cflag & CSIZE) |
182 |
{ |
183 |
case CS5: |
184 |
pser_inf->word_length = 5; |
185 |
break; |
186 |
case CS6: |
187 |
pser_inf->word_length = 6; |
188 |
break; |
189 |
case CS7: |
190 |
pser_inf->word_length = 7; |
191 |
break; |
192 |
default: |
193 |
pser_inf->word_length = 8; |
194 |
break; |
195 |
} |
196 |
|
197 |
return True; |
198 |
} |
199 |
|
200 |
static void |
201 |
set_termios(void) |
202 |
{ |
203 |
speed_t speed; |
204 |
|
205 |
switch (baud_rate) |
206 |
{ |
207 |
#ifdef B75 |
208 |
case 75: |
209 |
speed = B75; |
210 |
break; |
211 |
#endif |
212 |
#ifdef B110 |
213 |
case 110: |
214 |
speed = B110; |
215 |
break; |
216 |
#endif |
217 |
#ifdef B134 |
218 |
case 134: |
219 |
speed = B134; |
220 |
break; |
221 |
#endif |
222 |
#ifdef B150 |
223 |
case 150: |
224 |
speed = B150; |
225 |
break; |
226 |
#endif |
227 |
#ifdef B300 |
228 |
case 300: |
229 |
speed = B300; |
230 |
break; |
231 |
#endif |
232 |
#ifdef B600 |
233 |
case 600: |
234 |
speed = B600; |
235 |
break; |
236 |
#endif |
237 |
#ifdef B1200 |
238 |
case 1200: |
239 |
speed = B1200; |
240 |
break; |
241 |
#endif |
242 |
#ifdef B1800 |
243 |
case 1800: |
244 |
speed = B1800; |
245 |
break; |
246 |
#endif |
247 |
#ifdef B2400 |
248 |
case 2400: |
249 |
speed = B2400; |
250 |
break; |
251 |
#endif |
252 |
#ifdef B4800 |
253 |
case 4800: |
254 |
speed = B4800; |
255 |
break; |
256 |
#endif |
257 |
#ifdef B9600 |
258 |
case 9600: |
259 |
speed = B9600; |
260 |
break; |
261 |
#endif |
262 |
#ifdef B19200 |
263 |
case 19200: |
264 |
speed = B19200; |
265 |
break; |
266 |
#endif |
267 |
#ifdef B38400 |
268 |
case 38400: |
269 |
speed = B38400; |
270 |
break; |
271 |
#endif |
272 |
#ifdef B57600 |
273 |
case 57600: |
274 |
speed = B57600; |
275 |
break; |
276 |
#endif |
277 |
#ifdef B115200 |
278 |
case 115200: |
279 |
speed = B115200; |
280 |
break; |
281 |
#endif |
282 |
default: |
283 |
speed = B0; |
284 |
break; |
285 |
} |
286 |
|
287 |
/* on systems with separate ispeed and ospeed, we can remember the speed |
288 |
in ispeed while changing DTR with ospeed */ |
289 |
cfsetispeed(&termios, speed); |
290 |
cfsetospeed(&termios, dtr ? speed : 0); |
291 |
|
292 |
termios.c_cflag &= ~(CSTOPB | PARENB | PARODD | CSIZE); |
293 |
switch (stop_bits) |
294 |
{ |
295 |
case STOP_BITS_2: |
296 |
termios.c_cflag |= CSTOPB; |
297 |
break; |
298 |
} |
299 |
switch (parity) |
300 |
{ |
301 |
case EVEN_PARITY: |
302 |
termios.c_cflag |= PARENB; |
303 |
break; |
304 |
case ODD_PARITY: |
305 |
termios.c_cflag |= PARENB | PARODD; |
306 |
break; |
307 |
} |
308 |
switch (word_length) |
309 |
{ |
310 |
case 5: |
311 |
termios.c_cflag |= CS5; |
312 |
break; |
313 |
case 6: |
314 |
termios.c_cflag |= CS6; |
315 |
break; |
316 |
case 7: |
317 |
termios.c_cflag |= CS7; |
318 |
break; |
319 |
default: |
320 |
termios.c_cflag |= CS8; |
321 |
break; |
322 |
} |
323 |
|
324 |
tcsetattr(serial_fd, TCSANOW, &termios); |
325 |
} |
326 |
|
327 |
/* Enumeration of devices from rdesktop.c */ |
328 |
/* returns numer of units found and initialized. */ |
329 |
/* optarg looks like ':com1=/dev/ttyS0' */ |
330 |
/* when it arrives to this function. */ |
331 |
/* :com1=/dev/ttyS0,com2=/dev/ttyS1 */ |
332 |
int |
333 |
serial_enum_devices(int *id, char *optarg) |
334 |
{ |
335 |
SERIAL_DEVICE *pser_inf; |
336 |
|
337 |
char *pos = optarg; |
338 |
char *pos2; |
339 |
int count = 0; |
340 |
|
341 |
// skip the first colon |
342 |
optarg++; |
343 |
while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES) |
344 |
{ |
345 |
// Init data structures for device |
346 |
pser_inf = (SERIAL_DEVICE *) xmalloc(sizeof(SERIAL_DEVICE)); |
347 |
pser_inf->ptermios = (struct termios *) xmalloc(sizeof(struct termios)); |
348 |
pser_inf->pold_termios = (struct termios *) xmalloc(sizeof(struct termios)); |
349 |
|
350 |
pos2 = next_arg(optarg, '='); |
351 |
strcpy(g_rdpdr_device[*id].name, optarg); |
352 |
|
353 |
toupper_str(g_rdpdr_device[*id].name); |
354 |
|
355 |
g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1); |
356 |
strcpy(g_rdpdr_device[*id].local_path, pos2); |
357 |
printf("SERIAL %s to %s\n", g_rdpdr_device[*id].name, |
358 |
g_rdpdr_device[*id].local_path); |
359 |
// set device type |
360 |
g_rdpdr_device[*id].device_type = DEVICE_TYPE_SERIAL; |
361 |
g_rdpdr_device[*id].pdevice_data = (void *) pser_inf; |
362 |
count++; |
363 |
(*id)++; |
364 |
|
365 |
optarg = pos; |
366 |
} |
367 |
return count; |
368 |
} |
369 |
|
370 |
NTSTATUS |
371 |
serial_create(uint32 device_id, uint32 access, uint32 share_mode, uint32 disposition, |
372 |
uint32 flags_and_attributes, char *filename, HANDLE * handle) |
373 |
{ |
374 |
HANDLE serial_fd; |
375 |
SERIAL_DEVICE *pser_inf; |
376 |
struct termios *ptermios; |
377 |
|
378 |
pser_inf = (SERIAL_DEVICE *) g_rdpdr_device[device_id].pdevice_data; |
379 |
ptermios = pser_inf->ptermios; |
380 |
serial_fd = open(g_rdpdr_device[device_id].local_path, O_RDWR | O_NOCTTY); |
381 |
|
382 |
if (serial_fd == -1) |
383 |
return STATUS_ACCESS_DENIED; |
384 |
|
385 |
if (!get_termios(pser_inf, serial_fd)) |
386 |
return STATUS_ACCESS_DENIED; |
387 |
|
388 |
// Store handle for later use |
389 |
g_rdpdr_device[device_id].handle = serial_fd; |
390 |
|
391 |
/* some sane information */ |
392 |
printf("INFO: SERIAL %s to %s\nINFO: speed %u baud, stop bits %u, parity %u, word length %u bits, dtr %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); |
393 |
printf("INFO: use stty to change settings\n"); |
394 |
|
395 |
//tcgetattr(serial_fd, pser_inf->ptermios); |
396 |
|
397 |
*handle = serial_fd; |
398 |
return STATUS_SUCCESS; |
399 |
} |
400 |
|
401 |
static NTSTATUS |
402 |
serial_close(HANDLE handle) |
403 |
{ |
404 |
close(serial_fd); |
405 |
return STATUS_SUCCESS; |
406 |
} |
407 |
|
408 |
NTSTATUS |
409 |
serial_read(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result) |
410 |
{ |
411 |
long timeout; |
412 |
SERIAL_DEVICE *pser_inf; |
413 |
struct termios *ptermios; |
414 |
|
415 |
timeout = 0; |
416 |
pser_inf = get_serial_info(handle); |
417 |
ptermios = pser_inf->ptermios; |
418 |
|
419 |
// Set timeouts kind of like the windows serial timeout parameters. Multiply timeout |
420 |
// with requested read size |
421 |
if (pser_inf->read_total_timeout_multiplier | pser_inf->read_total_timeout_constant) |
422 |
{ |
423 |
timeout = |
424 |
(pser_inf->read_total_timeout_multiplier * length + |
425 |
pser_inf->read_total_timeout_constant + 99) / 100; |
426 |
} |
427 |
else if (pser_inf->read_interval_timeout) |
428 |
{ |
429 |
timeout = (pser_inf->read_interval_timeout * length + 99) / 100; |
430 |
} |
431 |
|
432 |
// If a timeout is set, do a blocking read, which times out after some time. |
433 |
// It will make rdesktop less responsive, but it will improve serial performance, by not |
434 |
// reading one character at a time. |
435 |
if (timeout == 0) |
436 |
{ |
437 |
ptermios->c_cc[VTIME] = 0; |
438 |
ptermios->c_cc[VMIN] = 0; |
439 |
} |
440 |
else |
441 |
{ |
442 |
ptermios->c_cc[VTIME] = timeout; |
443 |
ptermios->c_cc[VMIN] = 1; |
444 |
} |
445 |
tcsetattr(handle, TCSANOW, ptermios); |
446 |
|
447 |
*result = read(handle, data, length); |
448 |
return STATUS_SUCCESS; |
449 |
} |
450 |
|
451 |
NTSTATUS |
452 |
serial_write(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result) |
453 |
{ |
454 |
*result = write(handle, data, length); |
455 |
return STATUS_SUCCESS; |
456 |
} |
457 |
|
458 |
static NTSTATUS |
459 |
serial_device_control(HANDLE handle, uint32 request, STREAM in, STREAM out) |
460 |
{ |
461 |
uint32 result; |
462 |
uint8 immediate; |
463 |
|
464 |
if ((request >> 16) != FILE_DEVICE_SERIAL_PORT) |
465 |
return STATUS_INVALID_PARAMETER; |
466 |
|
467 |
/* extract operation */ |
468 |
request >>= 2; |
469 |
request &= 0xfff; |
470 |
|
471 |
printf("SERIAL IOCTL %d\n", request); |
472 |
|
473 |
switch (request) |
474 |
{ |
475 |
case SERIAL_SET_BAUD_RATE: |
476 |
in_uint32_le(in, baud_rate); |
477 |
set_termios(); |
478 |
break; |
479 |
case SERIAL_GET_BAUD_RATE: |
480 |
out_uint32_le(out, baud_rate); |
481 |
break; |
482 |
case SERIAL_SET_QUEUE_SIZE: |
483 |
in_uint32_le(in, queue_in_size); |
484 |
in_uint32_le(in, queue_out_size); |
485 |
break; |
486 |
case SERIAL_SET_LINE_CONTROL: |
487 |
in_uint8(in, stop_bits); |
488 |
in_uint8(in, parity); |
489 |
in_uint8(in, word_length); |
490 |
set_termios(); |
491 |
break; |
492 |
case SERIAL_GET_LINE_CONTROL: |
493 |
out_uint8(out, stop_bits); |
494 |
out_uint8(out, parity); |
495 |
out_uint8(out, word_length); |
496 |
break; |
497 |
case SERIAL_IMMEDIATE_CHAR: |
498 |
in_uint8(in, immediate); |
499 |
serial_write(handle, &immediate, 1, 0, &result); |
500 |
break; |
501 |
case SERIAL_CONFIG_SIZE: |
502 |
out_uint32_le(out, 0); |
503 |
break; |
504 |
case SERIAL_GET_CHARS: |
505 |
out_uint8s(out, 6); |
506 |
break; |
507 |
case SERIAL_SET_CHARS: |
508 |
in_uint8s(in, 6); |
509 |
break; |
510 |
case SERIAL_GET_HANDFLOW: |
511 |
out_uint32_le(out, 0); |
512 |
out_uint32_le(out, 3); /* Xon/Xoff */ |
513 |
out_uint32_le(out, 0); |
514 |
out_uint32_le(out, 0); |
515 |
break; |
516 |
case SERIAL_SET_HANDFLOW: |
517 |
in_uint8s(in, 16); |
518 |
break; |
519 |
case SERIAL_SET_TIMEOUTS: |
520 |
in_uint8s(in, 20); |
521 |
break; |
522 |
case SERIAL_GET_TIMEOUTS: |
523 |
out_uint8s(out, 20); |
524 |
break; |
525 |
case SERIAL_GET_WAIT_MASK: |
526 |
out_uint32(out, wait_mask); |
527 |
break; |
528 |
case SERIAL_SET_WAIT_MASK: |
529 |
in_uint32(in, wait_mask); |
530 |
break; |
531 |
case SERIAL_SET_DTR: |
532 |
dtr = 1; |
533 |
set_termios(); |
534 |
break; |
535 |
case SERIAL_CLR_DTR: |
536 |
dtr = 0; |
537 |
set_termios(); |
538 |
break; |
539 |
#if 0 |
540 |
case SERIAL_WAIT_ON_MASK: |
541 |
/* XXX implement me */ |
542 |
break; |
543 |
case SERIAL_SET_BREAK_ON: |
544 |
tcsendbreak(serial_fd, 0); |
545 |
break; |
546 |
case SERIAL_PURGE: |
547 |
|
548 |
printf("SERIAL_PURGE\n"); |
549 |
in_uint32(in, purge_mask); |
550 |
if (purge_mask & 0x04) |
551 |
flush_mask |= TCOFLUSH; |
552 |
if (purge_mask & 0x08) |
553 |
flush_mask |= TCIFLUSH; |
554 |
if (flush_mask != 0) |
555 |
tcflush(handle, flush_mask); |
556 |
if (purge_mask & 0x01) |
557 |
rdpdr_abort_io(handle, 4, STATUS_CANCELLED); |
558 |
if (purge_mask & 0x02) |
559 |
rdpdr_abort_io(handle, 3, STATUS_CANCELLED); |
560 |
break; |
561 |
|
562 |
case SERIAL_RESET_DEVICE: |
563 |
case SERIAL_SET_BREAK_OFF: |
564 |
case SERIAL_SET_RTS: |
565 |
case SERIAL_CLR_RTS: |
566 |
case SERIAL_SET_XOFF: |
567 |
case SERIAL_SET_XON: |
568 |
/* ignore */ |
569 |
break; |
570 |
#endif |
571 |
|
572 |
default: |
573 |
unimpl("SERIAL IOCTL %d\n", request); |
574 |
return STATUS_INVALID_PARAMETER; |
575 |
} |
576 |
|
577 |
return STATUS_SUCCESS; |
578 |
} |
579 |
|
580 |
/* Read timeout for a given file descripter (device) when adding fd's to select() */ |
581 |
BOOL |
582 |
serial_get_timeout(uint32 handle, uint32 length, uint32 * timeout, uint32 * itv_timeout) |
583 |
{ |
584 |
int index; |
585 |
SERIAL_DEVICE *pser_inf; |
586 |
|
587 |
index = get_device_index(handle); |
588 |
|
589 |
if (g_rdpdr_device[index].device_type != DEVICE_TYPE_SERIAL) |
590 |
{ |
591 |
return False; |
592 |
} |
593 |
|
594 |
pser_inf = (SERIAL_DEVICE *) g_rdpdr_device[index].pdevice_data; |
595 |
|
596 |
*timeout = |
597 |
pser_inf->read_total_timeout_multiplier * length + |
598 |
pser_inf->read_total_timeout_constant; |
599 |
*itv_timeout = pser_inf->read_interval_timeout; |
600 |
return True; |
601 |
} |
602 |
|
603 |
DEVICE_FNS serial_fns = { |
604 |
serial_create, |
605 |
serial_close, |
606 |
serial_read, |
607 |
serial_write, |
608 |
serial_device_control |
609 |
}; |