| 1 |
#include <unistd.h> |
| 2 |
#include <fcntl.h> |
| 3 |
#include <termios.h> |
| 4 |
#include "rdesktop.h" |
| 5 |
|
| 6 |
#define FILE_DEVICE_SERIAL_PORT 0x1b |
| 7 |
|
| 8 |
#define SERIAL_SET_BAUD_RATE 1 |
| 9 |
#define SERIAL_SET_QUEUE_SIZE 2 |
| 10 |
#define SERIAL_SET_LINE_CONTROL 3 |
| 11 |
#define SERIAL_SET_BREAK_ON 4 |
| 12 |
#define SERIAL_SET_BREAK_OFF 5 |
| 13 |
#define SERIAL_IMMEDIATE_CHAR 6 |
| 14 |
#define SERIAL_SET_TIMEOUTS 7 |
| 15 |
#define SERIAL_GET_TIMEOUTS 8 |
| 16 |
#define SERIAL_SET_DTR 9 |
| 17 |
#define SERIAL_CLR_DTR 10 |
| 18 |
#define SERIAL_RESET_DEVICE 11 |
| 19 |
#define SERIAL_SET_RTS 12 |
| 20 |
#define SERIAL_CLR_RTS 13 |
| 21 |
#define SERIAL_SET_XOFF 14 |
| 22 |
#define SERIAL_SET_XON 15 |
| 23 |
#define SERIAL_GET_WAIT_MASK 16 |
| 24 |
#define SERIAL_SET_WAIT_MASK 17 |
| 25 |
#define SERIAL_WAIT_ON_MASK 18 |
| 26 |
#define SERIAL_PURGE 19 |
| 27 |
#define SERIAL_GET_BAUD_RATE 20 |
| 28 |
#define SERIAL_GET_LINE_CONTROL 21 |
| 29 |
#define SERIAL_GET_CHARS 22 |
| 30 |
#define SERIAL_SET_CHARS 23 |
| 31 |
#define SERIAL_GET_HANDFLOW 24 |
| 32 |
#define SERIAL_SET_HANDFLOW 25 |
| 33 |
#define SERIAL_GET_MODEMSTATUS 26 |
| 34 |
#define SERIAL_GET_COMMSTATUS 27 |
| 35 |
#define SERIAL_XOFF_COUNTER 28 |
| 36 |
#define SERIAL_GET_PROPERTIES 29 |
| 37 |
#define SERIAL_GET_DTRRTS 30 |
| 38 |
#define SERIAL_LSRMST_INSERT 31 |
| 39 |
#define SERIAL_CONFIG_SIZE 32 |
| 40 |
#define SERIAL_GET_COMMCONFIG 33 |
| 41 |
#define SERIAL_SET_COMMCONFIG 34 |
| 42 |
#define SERIAL_GET_STATS 35 |
| 43 |
#define SERIAL_CLEAR_STATS 36 |
| 44 |
#define SERIAL_GET_MODEM_CONTROL 37 |
| 45 |
#define SERIAL_SET_MODEM_CONTROL 38 |
| 46 |
#define SERIAL_SET_FIFO_CONTROL 39 |
| 47 |
|
| 48 |
#define STOP_BITS_1 0 |
| 49 |
#define STOP_BITS_2 2 |
| 50 |
|
| 51 |
#define NO_PARITY 0 |
| 52 |
#define ODD_PARITY 1 |
| 53 |
#define EVEN_PARITY 2 |
| 54 |
|
| 55 |
int serial_fd; |
| 56 |
struct termios termios; |
| 57 |
|
| 58 |
int dtr; |
| 59 |
uint32 baud_rate; |
| 60 |
uint32 queue_in_size, queue_out_size; |
| 61 |
uint32 wait_mask; |
| 62 |
uint8 stop_bits, parity, word_length; |
| 63 |
|
| 64 |
static BOOL |
| 65 |
get_termios(void) |
| 66 |
{ |
| 67 |
speed_t speed; |
| 68 |
|
| 69 |
if (tcgetattr(serial_fd, &termios) == -1) |
| 70 |
return False; |
| 71 |
|
| 72 |
speed = cfgetispeed(&termios); |
| 73 |
switch (speed) |
| 74 |
{ |
| 75 |
#ifdef B75 |
| 76 |
case B75: |
| 77 |
baud_rate = 75; |
| 78 |
break; |
| 79 |
#endif |
| 80 |
#ifdef B110 |
| 81 |
case B110: |
| 82 |
baud_rate = 110; |
| 83 |
break; |
| 84 |
#endif |
| 85 |
#ifdef B134 |
| 86 |
case B134: |
| 87 |
baud_rate = 134; |
| 88 |
break; |
| 89 |
#endif |
| 90 |
#ifdef B150 |
| 91 |
case B150: |
| 92 |
baud_rate = 150; |
| 93 |
break; |
| 94 |
#endif |
| 95 |
#ifdef B300 |
| 96 |
case B300: |
| 97 |
baud_rate = 300; |
| 98 |
break; |
| 99 |
#endif |
| 100 |
#ifdef B600 |
| 101 |
case B600: |
| 102 |
baud_rate = 600; |
| 103 |
break; |
| 104 |
#endif |
| 105 |
#ifdef B1200 |
| 106 |
case B1200: |
| 107 |
baud_rate = 1200; |
| 108 |
break; |
| 109 |
#endif |
| 110 |
#ifdef B1800 |
| 111 |
case B1800: |
| 112 |
baud_rate = 1800; |
| 113 |
break; |
| 114 |
#endif |
| 115 |
#ifdef B2400 |
| 116 |
case B2400: |
| 117 |
baud_rate = 2400; |
| 118 |
break; |
| 119 |
#endif |
| 120 |
#ifdef B4800 |
| 121 |
case B4800: |
| 122 |
baud_rate = 4800; |
| 123 |
break; |
| 124 |
#endif |
| 125 |
#ifdef B9600 |
| 126 |
case B9600: |
| 127 |
baud_rate = 9600; |
| 128 |
break; |
| 129 |
#endif |
| 130 |
#ifdef B19200 |
| 131 |
case B19200: |
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baud_rate = 19200; |
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break; |
| 134 |
#endif |
| 135 |
#ifdef B38400 |
| 136 |
case B38400: |
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baud_rate = 38400; |
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break; |
| 139 |
#endif |
| 140 |
#ifdef B57600 |
| 141 |
case B57600: |
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baud_rate = 57600; |
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break; |
| 144 |
#endif |
| 145 |
#ifdef B115200 |
| 146 |
case B115200: |
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baud_rate = 115200; |
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break; |
| 149 |
#endif |
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default: |
| 151 |
baud_rate = 0; |
| 152 |
break; |
| 153 |
} |
| 154 |
|
| 155 |
speed = cfgetospeed(&termios); |
| 156 |
dtr = (speed == B0) ? 0 : 1; |
| 157 |
|
| 158 |
stop_bits = (termios.c_cflag & CSTOPB) ? STOP_BITS_2 : STOP_BITS_1; |
| 159 |
parity = (termios. |
| 160 |
c_cflag & PARENB) ? ((termios. |
| 161 |
c_cflag & PARODD) ? ODD_PARITY : EVEN_PARITY) : NO_PARITY; |
| 162 |
switch (termios.c_cflag & CSIZE) |
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{ |
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case CS5: |
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word_length = 5; |
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break; |
| 167 |
case CS6: |
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word_length = 6; |
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break; |
| 170 |
case CS7: |
| 171 |
word_length = 7; |
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break; |
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default: |
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word_length = 8; |
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break; |
| 176 |
} |
| 177 |
|
| 178 |
return True; |
| 179 |
} |
| 180 |
|
| 181 |
static void |
| 182 |
set_termios(void) |
| 183 |
{ |
| 184 |
speed_t speed; |
| 185 |
|
| 186 |
switch (baud_rate) |
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{ |
| 188 |
#ifdef B75 |
| 189 |
case 75: |
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speed = B75; |
| 191 |
break; |
| 192 |
#endif |
| 193 |
#ifdef B110 |
| 194 |
case 110: |
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speed = B110; |
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break; |
| 197 |
#endif |
| 198 |
#ifdef B134 |
| 199 |
case 134: |
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speed = B134; |
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break; |
| 202 |
#endif |
| 203 |
#ifdef B150 |
| 204 |
case 150: |
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speed = B150; |
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break; |
| 207 |
#endif |
| 208 |
#ifdef B300 |
| 209 |
case 300: |
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speed = B300; |
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break; |
| 212 |
#endif |
| 213 |
#ifdef B600 |
| 214 |
case 600: |
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speed = B600; |
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break; |
| 217 |
#endif |
| 218 |
#ifdef B1200 |
| 219 |
case 1200: |
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speed = B1200; |
| 221 |
break; |
| 222 |
#endif |
| 223 |
#ifdef B1800 |
| 224 |
case 1800: |
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speed = B1800; |
| 226 |
break; |
| 227 |
#endif |
| 228 |
#ifdef B2400 |
| 229 |
case 2400: |
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speed = B2400; |
| 231 |
break; |
| 232 |
#endif |
| 233 |
#ifdef B4800 |
| 234 |
case 4800: |
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speed = B4800; |
| 236 |
break; |
| 237 |
#endif |
| 238 |
#ifdef B9600 |
| 239 |
case 9600: |
| 240 |
speed = B9600; |
| 241 |
break; |
| 242 |
#endif |
| 243 |
#ifdef B19200 |
| 244 |
case 19200: |
| 245 |
speed = B19200; |
| 246 |
break; |
| 247 |
#endif |
| 248 |
#ifdef B38400 |
| 249 |
case 38400: |
| 250 |
speed = B38400; |
| 251 |
break; |
| 252 |
#endif |
| 253 |
#ifdef B57600 |
| 254 |
case 57600: |
| 255 |
speed = B57600; |
| 256 |
break; |
| 257 |
#endif |
| 258 |
#ifdef B115200 |
| 259 |
case 115200: |
| 260 |
speed = B115200; |
| 261 |
break; |
| 262 |
#endif |
| 263 |
default: |
| 264 |
speed = B0; |
| 265 |
break; |
| 266 |
} |
| 267 |
|
| 268 |
/* on systems with separate ispeed and ospeed, we can remember the speed |
| 269 |
in ispeed while changing DTR with ospeed */ |
| 270 |
cfsetispeed(&termios, speed); |
| 271 |
cfsetospeed(&termios, dtr ? speed : 0); |
| 272 |
|
| 273 |
termios.c_cflag &= ~(CSTOPB | PARENB | PARODD | CSIZE); |
| 274 |
switch (stop_bits) |
| 275 |
{ |
| 276 |
case STOP_BITS_2: |
| 277 |
termios.c_cflag |= CSTOPB; |
| 278 |
break; |
| 279 |
} |
| 280 |
switch (parity) |
| 281 |
{ |
| 282 |
case EVEN_PARITY: |
| 283 |
termios.c_cflag |= PARENB; |
| 284 |
break; |
| 285 |
case ODD_PARITY: |
| 286 |
termios.c_cflag |= PARENB | PARODD; |
| 287 |
break; |
| 288 |
} |
| 289 |
switch (word_length) |
| 290 |
{ |
| 291 |
case 5: |
| 292 |
termios.c_cflag |= CS5; |
| 293 |
break; |
| 294 |
case 6: |
| 295 |
termios.c_cflag |= CS6; |
| 296 |
break; |
| 297 |
case 7: |
| 298 |
termios.c_cflag |= CS7; |
| 299 |
break; |
| 300 |
default: |
| 301 |
termios.c_cflag |= CS8; |
| 302 |
break; |
| 303 |
} |
| 304 |
|
| 305 |
tcsetattr(serial_fd, TCSANOW, &termios); |
| 306 |
} |
| 307 |
|
| 308 |
static NTSTATUS |
| 309 |
serial_create(HANDLE * handle) |
| 310 |
{ |
| 311 |
/* XXX do we have to handle concurrent open attempts? */ |
| 312 |
serial_fd = open("/dev/ttyS0", O_RDWR); |
| 313 |
if (serial_fd == -1) |
| 314 |
return STATUS_ACCESS_DENIED; |
| 315 |
|
| 316 |
if (!get_termios()) |
| 317 |
return STATUS_ACCESS_DENIED; |
| 318 |
|
| 319 |
*handle = 0; |
| 320 |
return STATUS_SUCCESS; |
| 321 |
} |
| 322 |
|
| 323 |
static NTSTATUS |
| 324 |
serial_close(HANDLE handle) |
| 325 |
{ |
| 326 |
close(serial_fd); |
| 327 |
return STATUS_SUCCESS; |
| 328 |
} |
| 329 |
|
| 330 |
static NTSTATUS |
| 331 |
serial_read(HANDLE handle, uint8 * data, uint32 length, uint32 * result) |
| 332 |
{ |
| 333 |
*result = read(serial_fd, data, length); |
| 334 |
return STATUS_SUCCESS; |
| 335 |
} |
| 336 |
|
| 337 |
static NTSTATUS |
| 338 |
serial_write(HANDLE handle, uint8 * data, uint32 length, uint32 * result) |
| 339 |
{ |
| 340 |
*result = write(serial_fd, data, length); |
| 341 |
return STATUS_SUCCESS; |
| 342 |
} |
| 343 |
|
| 344 |
static NTSTATUS |
| 345 |
serial_device_control(HANDLE handle, uint32 request, STREAM in, STREAM out) |
| 346 |
{ |
| 347 |
uint32 result; |
| 348 |
uint8 immediate; |
| 349 |
|
| 350 |
if ((request >> 16) != FILE_DEVICE_SERIAL_PORT) |
| 351 |
return STATUS_INVALID_PARAMETER; |
| 352 |
|
| 353 |
/* extract operation */ |
| 354 |
request >>= 2; |
| 355 |
request &= 0xfff; |
| 356 |
|
| 357 |
printf("SERIAL IOCTL %d\n", request); |
| 358 |
|
| 359 |
switch (request) |
| 360 |
{ |
| 361 |
case SERIAL_SET_BAUD_RATE: |
| 362 |
in_uint32_le(in, baud_rate); |
| 363 |
set_termios(); |
| 364 |
break; |
| 365 |
case SERIAL_GET_BAUD_RATE: |
| 366 |
out_uint32_le(out, baud_rate); |
| 367 |
break; |
| 368 |
case SERIAL_SET_QUEUE_SIZE: |
| 369 |
in_uint32_le(in, queue_in_size); |
| 370 |
in_uint32_le(in, queue_out_size); |
| 371 |
break; |
| 372 |
case SERIAL_SET_LINE_CONTROL: |
| 373 |
in_uint8(in, stop_bits); |
| 374 |
in_uint8(in, parity); |
| 375 |
in_uint8(in, word_length); |
| 376 |
set_termios(); |
| 377 |
break; |
| 378 |
case SERIAL_GET_LINE_CONTROL: |
| 379 |
out_uint8(out, stop_bits); |
| 380 |
out_uint8(out, parity); |
| 381 |
out_uint8(out, word_length); |
| 382 |
break; |
| 383 |
case SERIAL_IMMEDIATE_CHAR: |
| 384 |
in_uint8(in, immediate); |
| 385 |
serial_write(handle, &immediate, 1, &result); |
| 386 |
break; |
| 387 |
case SERIAL_CONFIG_SIZE: |
| 388 |
out_uint32_le(out, 0); |
| 389 |
break; |
| 390 |
case SERIAL_GET_CHARS: |
| 391 |
out_uint8s(out, 6); |
| 392 |
break; |
| 393 |
case SERIAL_SET_CHARS: |
| 394 |
in_uint8s(in, 6); |
| 395 |
break; |
| 396 |
case SERIAL_GET_HANDFLOW: |
| 397 |
out_uint32_le(out, 0); |
| 398 |
out_uint32_le(out, 3); /* Xon/Xoff */ |
| 399 |
out_uint32_le(out, 0); |
| 400 |
out_uint32_le(out, 0); |
| 401 |
break; |
| 402 |
case SERIAL_SET_HANDFLOW: |
| 403 |
in_uint8s(in, 16); |
| 404 |
break; |
| 405 |
case SERIAL_SET_TIMEOUTS: |
| 406 |
in_uint8s(in, 20); |
| 407 |
break; |
| 408 |
case SERIAL_GET_TIMEOUTS: |
| 409 |
out_uint8s(out, 20); |
| 410 |
break; |
| 411 |
case SERIAL_GET_WAIT_MASK: |
| 412 |
out_uint32(out, wait_mask); |
| 413 |
break; |
| 414 |
case SERIAL_SET_WAIT_MASK: |
| 415 |
in_uint32(in, wait_mask); |
| 416 |
break; |
| 417 |
case SERIAL_SET_DTR: |
| 418 |
dtr = 1; |
| 419 |
set_termios(); |
| 420 |
break; |
| 421 |
case SERIAL_CLR_DTR: |
| 422 |
dtr = 0; |
| 423 |
set_termios(); |
| 424 |
break; |
| 425 |
#if 0 |
| 426 |
case SERIAL_WAIT_ON_MASK: |
| 427 |
/* XXX implement me */ |
| 428 |
break; |
| 429 |
case SERIAL_SET_BREAK_ON: |
| 430 |
tcsendbreak(serial_fd, 0); |
| 431 |
break; |
| 432 |
case SERIAL_PURGE: |
| 433 |
in_uint32(purge_mask); |
| 434 |
/* tcflush */ |
| 435 |
break; |
| 436 |
case SERIAL_RESET_DEVICE: |
| 437 |
case SERIAL_SET_BREAK_OFF: |
| 438 |
case SERIAL_SET_RTS: |
| 439 |
case SERIAL_CLR_RTS: |
| 440 |
case SERIAL_SET_XOFF: |
| 441 |
case SERIAL_SET_XON: |
| 442 |
/* ignore */ |
| 443 |
break; |
| 444 |
#endif |
| 445 |
|
| 446 |
default: |
| 447 |
unimpl("SERIAL IOCTL %d\n", request); |
| 448 |
return STATUS_INVALID_PARAMETER; |
| 449 |
} |
| 450 |
|
| 451 |
return STATUS_SUCCESS; |
| 452 |
} |
| 453 |
|
| 454 |
DEVICE_FNS serial_fns = { |
| 455 |
serial_create, |
| 456 |
serial_close, |
| 457 |
serial_read, |
| 458 |
serial_write, |
| 459 |
serial_device_control |
| 460 |
}; |
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