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