| 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) |
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return False; |
| 71 |
|
| 72 |
speed = cfgetispeed(&termios); |
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switch (speed) |
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{ |
| 75 |
case B75: |
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baud_rate = 75; |
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break; |
| 78 |
case B110: |
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baud_rate = 110; |
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break; |
| 81 |
case B134: |
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baud_rate = 134; |
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break; |
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case B150: |
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baud_rate = 150; |
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break; |
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case B300: |
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baud_rate = 300; |
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break; |
| 90 |
case B600: |
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baud_rate = 600; |
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break; |
| 93 |
case B1200: |
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baud_rate = 1200; |
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break; |
| 96 |
case B1800: |
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baud_rate = 1800; |
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break; |
| 99 |
case B2400: |
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baud_rate = 2400; |
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break; |
| 102 |
case B4800: |
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baud_rate = 4800; |
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break; |
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case B9600: |
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baud_rate = 9600; |
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break; |
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case B19200: |
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baud_rate = 19200; |
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break; |
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case B38400: |
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baud_rate = 38400; |
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break; |
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case B57600: |
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baud_rate = 57600; |
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break; |
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case B115200: |
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baud_rate = 115200; |
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break; |
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default: |
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baud_rate = 0; |
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break; |
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} |
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|
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speed = cfgetospeed(&termios); |
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dtr = (speed == B0) ? 0 : 1; |
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|
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stop_bits = (termios.c_cflag & CSTOPB) ? STOP_BITS_2 : STOP_BITS_1; |
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parity = (termios. |
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c_cflag & PARENB) ? ((termios. |
| 131 |
c_cflag & PARODD) ? ODD_PARITY : EVEN_PARITY) : NO_PARITY; |
| 132 |
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; |
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case CS6: |
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word_length = 6; |
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break; |
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case CS7: |
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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; |
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} |
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|
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return True; |
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} |
| 150 |
|
| 151 |
static void |
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set_termios(void) |
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{ |
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speed_t speed; |
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|
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switch (baud_rate) |
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{ |
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case 75: |
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speed = B75; |
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break; |
| 161 |
case 110: |
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speed = B110; |
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break; |
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case 134: |
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speed = B134; |
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break; |
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case 150: |
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speed = B150; |
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break; |
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case 300: |
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speed = B300; |
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break; |
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case 600: |
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speed = B600; |
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break; |
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case 1200: |
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speed = B1200; |
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break; |
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case 1800: |
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speed = B1800; |
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break; |
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case 2400: |
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speed = B2400; |
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break; |
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case 4800: |
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speed = B4800; |
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break; |
| 188 |
case 9600: |
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speed = B9600; |
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break; |
| 191 |
case 19200: |
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speed = B19200; |
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break; |
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case 38400: |
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speed = B38400; |
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break; |
| 197 |
case 57600: |
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speed = B57600; |
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break; |
| 200 |
case 115200: |
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speed = B115200; |
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break; |
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default: |
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speed = B0; |
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break; |
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} |
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|
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/* on systems with separate ispeed and ospeed, we can remember the speed |
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in ispeed while changing DTR with ospeed */ |
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cfsetispeed(&termios, speed); |
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cfsetospeed(&termios, dtr ? speed : 0); |
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|
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termios.c_cflag &= ~(CSTOPB | PARENB | PARODD | CSIZE); |
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switch (stop_bits) |
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{ |
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case STOP_BITS_2: |
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termios.c_cflag |= CSTOPB; |
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break; |
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} |
| 220 |
switch (parity) |
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{ |
| 222 |
case EVEN_PARITY: |
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termios.c_cflag |= PARENB; |
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break; |
| 225 |
case ODD_PARITY: |
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termios.c_cflag |= PARENB | PARODD; |
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break; |
| 228 |
} |
| 229 |
switch (word_length) |
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{ |
| 231 |
case 5: |
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termios.c_cflag |= CS5; |
| 233 |
break; |
| 234 |
case 6: |
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termios.c_cflag |= CS6; |
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break; |
| 237 |
case 7: |
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termios.c_cflag |= CS7; |
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break; |
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default: |
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termios.c_cflag |= CS8; |
| 242 |
break; |
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} |
| 244 |
|
| 245 |
tcsetattr(serial_fd, TCSANOW, &termios); |
| 246 |
} |
| 247 |
|
| 248 |
static NTSTATUS |
| 249 |
serial_create(HANDLE * handle) |
| 250 |
{ |
| 251 |
/* XXX do we have to handle concurrent open attempts? */ |
| 252 |
serial_fd = open("/dev/ttyS0", O_RDWR); |
| 253 |
if (serial_fd == -1) |
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return STATUS_ACCESS_DENIED; |
| 255 |
|
| 256 |
if (!get_termios()) |
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return STATUS_ACCESS_DENIED; |
| 258 |
|
| 259 |
*handle = 0; |
| 260 |
return STATUS_SUCCESS; |
| 261 |
} |
| 262 |
|
| 263 |
static NTSTATUS |
| 264 |
serial_close(HANDLE handle) |
| 265 |
{ |
| 266 |
close(serial_fd); |
| 267 |
return STATUS_SUCCESS; |
| 268 |
} |
| 269 |
|
| 270 |
static NTSTATUS |
| 271 |
serial_read(HANDLE handle, uint8 * data, uint32 length, uint32 * result) |
| 272 |
{ |
| 273 |
*result = read(serial_fd, data, length); |
| 274 |
return STATUS_SUCCESS; |
| 275 |
} |
| 276 |
|
| 277 |
static NTSTATUS |
| 278 |
serial_write(HANDLE handle, uint8 * data, uint32 length, uint32 * result) |
| 279 |
{ |
| 280 |
*result = write(serial_fd, data, length); |
| 281 |
return STATUS_SUCCESS; |
| 282 |
} |
| 283 |
|
| 284 |
static NTSTATUS |
| 285 |
serial_device_control(HANDLE handle, uint32 request, STREAM in, STREAM out) |
| 286 |
{ |
| 287 |
uint32 result; |
| 288 |
uint8 immediate; |
| 289 |
|
| 290 |
if ((request >> 16) != FILE_DEVICE_SERIAL_PORT) |
| 291 |
return STATUS_INVALID_PARAMETER; |
| 292 |
|
| 293 |
/* extract operation */ |
| 294 |
request >>= 2; |
| 295 |
request &= 0xfff; |
| 296 |
|
| 297 |
printf("SERIAL IOCTL %d\n", request); |
| 298 |
|
| 299 |
switch (request) |
| 300 |
{ |
| 301 |
case SERIAL_SET_BAUD_RATE: |
| 302 |
in_uint32_le(in, baud_rate); |
| 303 |
set_termios(); |
| 304 |
break; |
| 305 |
case SERIAL_GET_BAUD_RATE: |
| 306 |
out_uint32_le(out, baud_rate); |
| 307 |
break; |
| 308 |
case SERIAL_SET_QUEUE_SIZE: |
| 309 |
in_uint32_le(in, queue_in_size); |
| 310 |
in_uint32_le(in, queue_out_size); |
| 311 |
break; |
| 312 |
case SERIAL_SET_LINE_CONTROL: |
| 313 |
in_uint8(in, stop_bits); |
| 314 |
in_uint8(in, parity); |
| 315 |
in_uint8(in, word_length); |
| 316 |
set_termios(); |
| 317 |
break; |
| 318 |
case SERIAL_GET_LINE_CONTROL: |
| 319 |
out_uint8(out, stop_bits); |
| 320 |
out_uint8(out, parity); |
| 321 |
out_uint8(out, word_length); |
| 322 |
break; |
| 323 |
case SERIAL_IMMEDIATE_CHAR: |
| 324 |
in_uint8(in, immediate); |
| 325 |
serial_write(handle, &immediate, 1, &result); |
| 326 |
break; |
| 327 |
case SERIAL_CONFIG_SIZE: |
| 328 |
out_uint32_le(out, 0); |
| 329 |
break; |
| 330 |
case SERIAL_GET_CHARS: |
| 331 |
out_uint8s(out, 6); |
| 332 |
break; |
| 333 |
case SERIAL_SET_CHARS: |
| 334 |
in_uint8s(in, 6); |
| 335 |
break; |
| 336 |
case SERIAL_GET_HANDFLOW: |
| 337 |
out_uint32_le(out, 0); |
| 338 |
out_uint32_le(out, 3); /* Xon/Xoff */ |
| 339 |
out_uint32_le(out, 0); |
| 340 |
out_uint32_le(out, 0); |
| 341 |
break; |
| 342 |
case SERIAL_SET_HANDFLOW: |
| 343 |
in_uint8s(in, 16); |
| 344 |
break; |
| 345 |
case SERIAL_SET_TIMEOUTS: |
| 346 |
in_uint8s(in, 20); |
| 347 |
break; |
| 348 |
case SERIAL_GET_TIMEOUTS: |
| 349 |
out_uint8s(out, 20); |
| 350 |
break; |
| 351 |
case SERIAL_GET_WAIT_MASK: |
| 352 |
out_uint32(out, wait_mask); |
| 353 |
break; |
| 354 |
case SERIAL_SET_WAIT_MASK: |
| 355 |
in_uint32(in, wait_mask); |
| 356 |
break; |
| 357 |
case SERIAL_SET_DTR: |
| 358 |
dtr = 1; |
| 359 |
set_termios(); |
| 360 |
break; |
| 361 |
case SERIAL_CLR_DTR: |
| 362 |
dtr = 0; |
| 363 |
set_termios(); |
| 364 |
break; |
| 365 |
#if 0 |
| 366 |
case SERIAL_WAIT_ON_MASK: |
| 367 |
/* XXX implement me */ |
| 368 |
break; |
| 369 |
case SERIAL_SET_BREAK_ON: |
| 370 |
tcsendbreak(serial_fd, 0); |
| 371 |
break; |
| 372 |
case SERIAL_PURGE: |
| 373 |
in_uint32(purge_mask); |
| 374 |
/* tcflush */ |
| 375 |
break; |
| 376 |
case SERIAL_RESET_DEVICE: |
| 377 |
case SERIAL_SET_BREAK_OFF: |
| 378 |
case SERIAL_SET_RTS: |
| 379 |
case SERIAL_CLR_RTS: |
| 380 |
case SERIAL_SET_XOFF: |
| 381 |
case SERIAL_SET_XON: |
| 382 |
/* ignore */ |
| 383 |
break; |
| 384 |
#endif |
| 385 |
|
| 386 |
default: |
| 387 |
unimpl("SERIAL IOCTL %d\n", request); |
| 388 |
return STATUS_INVALID_PARAMETER; |
| 389 |
} |
| 390 |
|
| 391 |
return STATUS_SUCCESS; |
| 392 |
} |
| 393 |
|
| 394 |
DEVICE_FNS serial_fns = { |
| 395 |
serial_create, |
| 396 |
serial_close, |
| 397 |
serial_read, |
| 398 |
serial_write, |
| 399 |
serial_device_control |
| 400 |
}; |
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