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serial.c
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serial.c
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/* -*- c-basic-offset: 8 -*-
rdesktop: A Remote Desktop Protocol client.
Copyright (C) Matthew Chapman <matthewc.unsw.edu.au> 1999-2008
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <termios.h>
#include <strings.h>
#include <sys/ioctl.h>
#ifdef HAVE_SYS_MODEM_H
#include <sys/modem.h>
#endif
#ifdef HAVE_SYS_FILIO_H
#include <sys/filio.h>
#endif
#ifdef HAVE_SYS_STRTIO_H
#include <sys/strtio.h>
#endif
#include "rdesktop.h"
#define FILE_DEVICE_SERIAL_PORT 0x1b
#define SERIAL_SET_BAUD_RATE 1
#define SERIAL_SET_QUEUE_SIZE 2
#define SERIAL_SET_LINE_CONTROL 3
#define SERIAL_SET_BREAK_ON 4
#define SERIAL_SET_BREAK_OFF 5
#define SERIAL_IMMEDIATE_CHAR 6
#define SERIAL_SET_TIMEOUTS 7
#define SERIAL_GET_TIMEOUTS 8
#define SERIAL_SET_DTR 9
#define SERIAL_CLR_DTR 10
#define SERIAL_RESET_DEVICE 11
#define SERIAL_SET_RTS 12
#define SERIAL_CLR_RTS 13
#define SERIAL_SET_XOFF 14
#define SERIAL_SET_XON 15
#define SERIAL_GET_WAIT_MASK 16
#define SERIAL_SET_WAIT_MASK 17
#define SERIAL_WAIT_ON_MASK 18
#define SERIAL_PURGE 19
#define SERIAL_GET_BAUD_RATE 20
#define SERIAL_GET_LINE_CONTROL 21
#define SERIAL_GET_CHARS 22
#define SERIAL_SET_CHARS 23
#define SERIAL_GET_HANDFLOW 24
#define SERIAL_SET_HANDFLOW 25
#define SERIAL_GET_MODEMSTATUS 26
#define SERIAL_GET_COMMSTATUS 27
#define SERIAL_XOFF_COUNTER 28
#define SERIAL_GET_PROPERTIES 29
#define SERIAL_GET_DTRRTS 30
#define SERIAL_LSRMST_INSERT 31
#define SERIAL_CONFIG_SIZE 32
#define SERIAL_GET_COMMCONFIG 33
#define SERIAL_SET_COMMCONFIG 34
#define SERIAL_GET_STATS 35
#define SERIAL_CLEAR_STATS 36
#define SERIAL_GET_MODEM_CONTROL 37
#define SERIAL_SET_MODEM_CONTROL 38
#define SERIAL_SET_FIFO_CONTROL 39
#define STOP_BITS_1 0
#define STOP_BITS_2 2
#define NO_PARITY 0
#define ODD_PARITY 1
#define EVEN_PARITY 2
#define SERIAL_PURGE_TXABORT 0x00000001
#define SERIAL_PURGE_RXABORT 0x00000002
#define SERIAL_PURGE_TXCLEAR 0x00000004
#define SERIAL_PURGE_RXCLEAR 0x00000008
/* SERIAL_WAIT_ON_MASK */
#define SERIAL_EV_RXCHAR 0x0001 /* Any Character received */
#define SERIAL_EV_RXFLAG 0x0002 /* Received certain character */
#define SERIAL_EV_TXEMPTY 0x0004 /* Transmit Queue Empty */
#define SERIAL_EV_CTS 0x0008 /* CTS changed state */
#define SERIAL_EV_DSR 0x0010 /* DSR changed state */
#define SERIAL_EV_RLSD 0x0020 /* RLSD changed state */
#define SERIAL_EV_BREAK 0x0040 /* BREAK received */
#define SERIAL_EV_ERR 0x0080 /* Line status error occurred */
#define SERIAL_EV_RING 0x0100 /* Ring signal detected */
#define SERIAL_EV_PERR 0x0200 /* Printer error occurred */
#define SERIAL_EV_RX80FULL 0x0400 /* Receive buffer is 80 percent full */
#define SERIAL_EV_EVENT1 0x0800 /* Provider specific event 1 */
#define SERIAL_EV_EVENT2 0x1000 /* Provider specific event 2 */
/* Modem Status */
#define SERIAL_MS_DTR 0x01
#define SERIAL_MS_RTS 0x02
#define SERIAL_MS_CTS 0x10
#define SERIAL_MS_DSR 0x20
#define SERIAL_MS_RNG 0x40
#define SERIAL_MS_CAR 0x80
/* Handflow */
#define SERIAL_DTR_CONTROL 0x01
#define SERIAL_CTS_HANDSHAKE 0x08
#define SERIAL_ERROR_ABORT 0x80000000
#define SERIAL_XON_HANDSHAKE 0x01
#define SERIAL_XOFF_HANDSHAKE 0x02
#define SERIAL_DSR_SENSITIVITY 0x40
#define SERIAL_CHAR_EOF 0
#define SERIAL_CHAR_ERROR 1
#define SERIAL_CHAR_BREAK 2
#define SERIAL_CHAR_EVENT 3
#define SERIAL_CHAR_XON 4
#define SERIAL_CHAR_XOFF 5
#ifndef CRTSCTS
#define CRTSCTS 0
#endif
/* FIONREAD should really do the same thing as TIOCINQ, where it is
* not available */
#if !defined(TIOCINQ) && defined(FIONREAD)
#define TIOCINQ FIONREAD
#endif
#if !defined(TIOCOUTQ) && defined(FIONWRITE)
#define TIOCOUTQ FIONWRITE
#endif
extern RDPDR_DEVICE g_rdpdr_device[];
static SERIAL_DEVICE *
get_serial_info(RD_NTHANDLE handle)
{
int index;
for (index = 0; index < RDPDR_MAX_DEVICES; index++)
{
if (handle == g_rdpdr_device[index].handle)
return (SERIAL_DEVICE *) g_rdpdr_device[index].pdevice_data;
}
return NULL;
}
static RD_BOOL
get_termios(SERIAL_DEVICE * pser_inf, RD_NTHANDLE serial_fd)
{
speed_t speed;
struct termios *ptermios;
ptermios = pser_inf->ptermios;
if (tcgetattr(serial_fd, ptermios) == -1)
return False;
speed = cfgetispeed(ptermios);
switch (speed)
{
#ifdef B75
case B75:
pser_inf->baud_rate = 75;
break;
#endif
#ifdef B110
case B110:
pser_inf->baud_rate = 110;
break;
#endif
#ifdef B134
case B134:
pser_inf->baud_rate = 134;
break;
#endif
#ifdef B150
case B150:
pser_inf->baud_rate = 150;
break;
#endif
#ifdef B300
case B300:
pser_inf->baud_rate = 300;
break;
#endif
#ifdef B600
case B600:
pser_inf->baud_rate = 600;
break;
#endif
#ifdef B1200
case B1200:
pser_inf->baud_rate = 1200;
break;
#endif
#ifdef B1800
case B1800:
pser_inf->baud_rate = 1800;
break;
#endif
#ifdef B2400
case B2400:
pser_inf->baud_rate = 2400;
break;
#endif
#ifdef B4800
case B4800:
pser_inf->baud_rate = 4800;
break;
#endif
#ifdef B9600
case B9600:
pser_inf->baud_rate = 9600;
break;
#endif
#ifdef B19200
case B19200:
pser_inf->baud_rate = 19200;
break;
#endif
#ifdef B38400
case B38400:
pser_inf->baud_rate = 38400;
break;
#endif
#ifdef B57600
case B57600:
pser_inf->baud_rate = 57600;
break;
#endif
#ifdef B115200
case B115200:
pser_inf->baud_rate = 115200;
break;
#endif
#ifdef B230400
case B230400:
pser_inf->baud_rate = 230400;
break;
#endif
#ifdef B460800
case B460800:
pser_inf->baud_rate = 460800;
break;
#endif
default:
pser_inf->baud_rate = 9600;
break;
}
speed = cfgetospeed(ptermios);
pser_inf->dtr = (speed == B0) ? 0 : 1;
pser_inf->stop_bits = (ptermios->c_cflag & CSTOPB) ? STOP_BITS_2 : STOP_BITS_1;
pser_inf->parity =
(ptermios->c_cflag & PARENB) ? ((ptermios->c_cflag & PARODD) ? ODD_PARITY :
EVEN_PARITY) : NO_PARITY;
switch (ptermios->c_cflag & CSIZE)
{
case CS5:
pser_inf->word_length = 5;
break;
case CS6:
pser_inf->word_length = 6;
break;
case CS7:
pser_inf->word_length = 7;
break;
default:
pser_inf->word_length = 8;
break;
}
if (ptermios->c_cflag & CRTSCTS)
{
pser_inf->control = SERIAL_DTR_CONTROL | SERIAL_CTS_HANDSHAKE | SERIAL_ERROR_ABORT;
}
else
{
pser_inf->control = SERIAL_DTR_CONTROL | SERIAL_ERROR_ABORT;
}
pser_inf->xonoff = SERIAL_DSR_SENSITIVITY;
if (ptermios->c_iflag & IXON)
pser_inf->xonoff |= SERIAL_XON_HANDSHAKE;
if (ptermios->c_iflag & IXOFF)
pser_inf->xonoff |= SERIAL_XOFF_HANDSHAKE;
pser_inf->chars[SERIAL_CHAR_XON] = ptermios->c_cc[VSTART];
pser_inf->chars[SERIAL_CHAR_XOFF] = ptermios->c_cc[VSTOP];
pser_inf->chars[SERIAL_CHAR_EOF] = ptermios->c_cc[VEOF];
pser_inf->chars[SERIAL_CHAR_BREAK] = ptermios->c_cc[VINTR];
pser_inf->chars[SERIAL_CHAR_ERROR] = ptermios->c_cc[VKILL];
return True;
}
static void
set_termios(SERIAL_DEVICE * pser_inf, RD_NTHANDLE serial_fd)
{
speed_t speed;
struct termios *ptermios;
ptermios = pser_inf->ptermios;
switch (pser_inf->baud_rate)
{
#ifdef B75
case 75:
speed = B75;
break;
#endif
#ifdef B110
case 110:
speed = B110;
break;
#endif
#ifdef B134
case 134:
speed = B134;
break;
#endif
#ifdef B150
case 150:
speed = B150;
break;
#endif
#ifdef B300
case 300:
speed = B300;
break;
#endif
#ifdef B600
case 600:
speed = B600;
break;
#endif
#ifdef B1200
case 1200:
speed = B1200;
break;
#endif
#ifdef B1800
case 1800:
speed = B1800;
break;
#endif
#ifdef B2400
case 2400:
speed = B2400;
break;
#endif
#ifdef B4800
case 4800:
speed = B4800;
break;
#endif
#ifdef B9600
case 9600:
speed = B9600;
break;
#endif
#ifdef B19200
case 19200:
speed = B19200;
break;
#endif
#ifdef B38400
case 38400:
speed = B38400;
break;
#endif
#ifdef B57600
case 57600:
speed = B57600;
break;
#endif
#ifdef B115200
case 115200:
speed = B115200;
break;
#endif
#ifdef B230400
case 230400:
speed = B115200;
break;
#endif
#ifdef B460800
case 460800:
speed = B115200;
break;
#endif
default:
speed = B9600;
break;
}
#ifdef CBAUD
ptermios->c_cflag &= ~CBAUD;
ptermios->c_cflag |= speed;
#else
/* on systems with separate ispeed and ospeed, we can remember the speed
in ispeed while changing DTR with ospeed */
cfsetispeed(pser_inf->ptermios, speed);
cfsetospeed(pser_inf->ptermios, pser_inf->dtr ? speed : 0);
#endif
ptermios->c_cflag &= ~(CSTOPB | PARENB | PARODD | CSIZE | CRTSCTS);
switch (pser_inf->stop_bits)
{
case STOP_BITS_2:
ptermios->c_cflag |= CSTOPB;
break;
default:
ptermios->c_cflag &= ~CSTOPB;
break;
}
switch (pser_inf->parity)
{
case EVEN_PARITY:
ptermios->c_cflag |= PARENB;
break;
case ODD_PARITY:
ptermios->c_cflag |= PARENB | PARODD;
break;
case NO_PARITY:
ptermios->c_cflag &= ~(PARENB | PARODD);
break;
}
switch (pser_inf->word_length)
{
case 5:
ptermios->c_cflag |= CS5;
break;
case 6:
ptermios->c_cflag |= CS6;
break;
case 7:
ptermios->c_cflag |= CS7;
break;
default:
ptermios->c_cflag |= CS8;
break;
}
#if 0
if (pser_inf->rts)
ptermios->c_cflag |= CRTSCTS;
else
ptermios->c_cflag &= ~CRTSCTS;
#endif
if (pser_inf->control & SERIAL_CTS_HANDSHAKE)
{
ptermios->c_cflag |= CRTSCTS;
}
else
{
ptermios->c_cflag &= ~CRTSCTS;
}
if (pser_inf->xonoff & SERIAL_XON_HANDSHAKE)
{
ptermios->c_iflag |= IXON | IMAXBEL;
}
if (pser_inf->xonoff & SERIAL_XOFF_HANDSHAKE)
{
ptermios->c_iflag |= IXOFF | IMAXBEL;
}
if ((pser_inf->xonoff & (SERIAL_XOFF_HANDSHAKE | SERIAL_XON_HANDSHAKE)) == 0)
{
ptermios->c_iflag &= ~IXON;
ptermios->c_iflag &= ~IXOFF;
}
ptermios->c_cc[VSTART] = pser_inf->chars[SERIAL_CHAR_XON];
ptermios->c_cc[VSTOP] = pser_inf->chars[SERIAL_CHAR_XOFF];
ptermios->c_cc[VEOF] = pser_inf->chars[SERIAL_CHAR_EOF];
ptermios->c_cc[VINTR] = pser_inf->chars[SERIAL_CHAR_BREAK];
ptermios->c_cc[VKILL] = pser_inf->chars[SERIAL_CHAR_ERROR];
tcsetattr(serial_fd, TCSANOW, ptermios);
}
/* Enumeration of devices from rdesktop.c */
/* returns number of units found and initialized. */
/* optarg looks like ':com1=/dev/ttyS0' */
/* when it arrives to this function. */
/* :com1=/dev/ttyS0,com2=/dev/ttyS1 */
int
serial_enum_devices(uint32 * id, char *optarg)
{
SERIAL_DEVICE *pser_inf;
char *pos = optarg;
char *pos2;
int count = 0;
/* skip the first colon */
optarg++;
while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)
{
/* Init data structures for device */
pser_inf = (SERIAL_DEVICE *) xmalloc(sizeof(SERIAL_DEVICE));
pser_inf->ptermios = (struct termios *) xmalloc(sizeof(struct termios));
memset(pser_inf->ptermios, 0, sizeof(struct termios));
pser_inf->pold_termios = (struct termios *) xmalloc(sizeof(struct termios));
memset(pser_inf->pold_termios, 0, sizeof(struct termios));
pos2 = next_arg(optarg, '=');
strcpy(g_rdpdr_device[*id].name, optarg);
toupper_str(g_rdpdr_device[*id].name);
g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1);
strcpy(g_rdpdr_device[*id].local_path, pos2);
logger(Core, Debug, "serial_enum_devices(), %s to %s", g_rdpdr_device[*id].name,
g_rdpdr_device[*id].local_path);
/* set device type */
g_rdpdr_device[*id].device_type = DEVICE_TYPE_SERIAL;
g_rdpdr_device[*id].pdevice_data = (void *) pser_inf;
count++;
(*id)++;
optarg = pos;
}
return count;
}
static RD_NTSTATUS
serial_create(uint32 device_id, uint32 access, uint32 share_mode, uint32 disposition,
uint32 flags_and_attributes, char *filename, RD_NTHANDLE * handle)
{
UNUSED(access);
UNUSED(share_mode);
UNUSED(disposition);
UNUSED(flags_and_attributes);
UNUSED(filename);
int serial_fd;
SERIAL_DEVICE *pser_inf;
pser_inf = (SERIAL_DEVICE *) g_rdpdr_device[device_id].pdevice_data;
serial_fd = open(g_rdpdr_device[device_id].local_path, O_RDWR | O_NOCTTY | O_NONBLOCK);
if (serial_fd == -1)
{
logger(Core, Error, "serial_create(), open '%s' failed: %s",
g_rdpdr_device[device_id].local_path, strerror(errno));
return RD_STATUS_ACCESS_DENIED;
}
if (!get_termios(pser_inf, serial_fd))
{
logger(Core, Error, "serial_create(), access denied to %s",
g_rdpdr_device[device_id].name);
fflush(stdout);
return RD_STATUS_ACCESS_DENIED;
}
/* Store handle for later use */
g_rdpdr_device[device_id].handle = serial_fd;
/* some sane information */
logger(Core, Debug,
"serial_create(), %s to %s, speed %u baud, stop bits %u, parity %u, word length %u bits, dtr %u, rts %u",
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);
pser_inf->ptermios->c_iflag &=
~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
pser_inf->ptermios->c_oflag &= ~OPOST;
pser_inf->ptermios->c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
pser_inf->ptermios->c_cflag &= ~(CSIZE | PARENB);
pser_inf->ptermios->c_cflag |= CS8;
tcsetattr(serial_fd, TCSANOW, pser_inf->ptermios);
pser_inf->event_txempty = 0;
pser_inf->event_cts = 0;
pser_inf->event_dsr = 0;
pser_inf->event_rlsd = 0;
pser_inf->event_pending = 0;
*handle = serial_fd;
/* all read and writes should be non blocking */
if (fcntl(*handle, F_SETFL, O_NONBLOCK) == -1)
logger(Core, Error, "serial_create(), failed to set non blocking: %s",
strerror(errno));
pser_inf->read_total_timeout_constant = 5;
return RD_STATUS_SUCCESS;
}
static RD_NTSTATUS
serial_close(RD_NTHANDLE handle)
{
int i = get_device_index(handle);
if (i >= 0)
g_rdpdr_device[i].handle = 0;
rdpdr_abort_io(handle, 0, RD_STATUS_TIMEOUT);
close(handle);
return RD_STATUS_SUCCESS;
}
static RD_NTSTATUS
serial_read(RD_NTHANDLE handle, uint8 * data, uint32 length, uint64 offset, uint32 * result)
{
UNUSED(offset); /* Offset must always be zero according to MS-RDPESP */
long timeout;
SERIAL_DEVICE *pser_inf;
struct termios *ptermios;
#ifdef TIOCINQ
int bytes_inqueue;
#endif
timeout = 90;
pser_inf = get_serial_info(handle);
ptermios = pser_inf->ptermios;
/* Set timeouts kind of like the windows serial timeout parameters. Multiply timeout
with requested read size */
if (pser_inf->read_total_timeout_multiplier | pser_inf->read_total_timeout_constant)
{
timeout =
(pser_inf->read_total_timeout_multiplier * length +
pser_inf->read_total_timeout_constant + 99) / 100;
}
else if (pser_inf->read_interval_timeout)
{
timeout = (pser_inf->read_interval_timeout * length + 99) / 100;
}
/* If a timeout is set, do a blocking read, which times out after some time.
It will make rdesktop less responsive, but it will improve serial performance, by not
reading one character at a time. */
if (timeout == 0)
{
ptermios->c_cc[VTIME] = 0;
ptermios->c_cc[VMIN] = 0;
}
else
{
ptermios->c_cc[VTIME] = timeout;
ptermios->c_cc[VMIN] = 1;
}
tcsetattr(handle, TCSANOW, ptermios);
#if defined(TIOCINQ)
ioctl(handle, TIOCINQ, &bytes_inqueue);
logger(Core, Debug, "serial_read(), inqueue: %d expected %d\n", bytes_inqueue, length);
#endif
*result = read(handle, data, length);
logger(Core, Debug, "serial_read(), %d bytes read", *result);
return RD_STATUS_SUCCESS;
}
static RD_NTSTATUS
serial_write(RD_NTHANDLE handle, uint8 * data, uint32 length, uint64 offset, uint32 * result)
{
UNUSED(offset); /* Offset must always be zero according to MS-RDPESP */
SERIAL_DEVICE *pser_inf;
pser_inf = get_serial_info(handle);
*result = write(handle, data, length);
if (*result > 0)
pser_inf->event_txempty = *result;
logger(Core, Debug, "serial_write(), %d bytes written", *result);
return RD_STATUS_SUCCESS;
}
static RD_NTSTATUS
serial_device_control(RD_NTHANDLE handle, uint32 request, STREAM in, STREAM out)
{
int purge_mask;
uint32 result, modemstate;
uint8 immediate;
SERIAL_DEVICE *pser_inf;
if ((request >> 16) != FILE_DEVICE_SERIAL_PORT)
return RD_STATUS_INVALID_PARAMETER;
pser_inf = get_serial_info(handle);
/* extract operation */
request >>= 2;
request &= 0xfff;
switch (request)
{
case SERIAL_SET_BAUD_RATE:
in_uint32_le(in, pser_inf->baud_rate);
set_termios(pser_inf, handle);
logger(Protocol, Debug, "serial_device_control(), set baud rate %d",
pser_inf->baud_rate);
break;
case SERIAL_GET_BAUD_RATE:
out_uint32_le(out, pser_inf->baud_rate);
logger(Protocol, Debug, "serial_device_control(), get baud rate %d",
pser_inf->baud_rate);
break;
case SERIAL_SET_QUEUE_SIZE:
in_uint32_le(in, pser_inf->queue_in_size);
in_uint32_le(in, pser_inf->queue_out_size);
logger(Protocol, Debug,
"serial_device_control(), set queue size, in=%d out=%d",
pser_inf->queue_in_size, pser_inf->queue_out_size);
break;
case SERIAL_SET_LINE_CONTROL:
in_uint8(in, pser_inf->stop_bits);
in_uint8(in, pser_inf->parity);
in_uint8(in, pser_inf->word_length);
set_termios(pser_inf, handle);
logger(Protocol, Debug,
"serial_device_control(), set line control, stop=%d, parity=%d, word=%d",
pser_inf->stop_bits, pser_inf->parity, pser_inf->word_length);
break;
case SERIAL_GET_LINE_CONTROL:
logger(Protocol, Debug, "serial_device_control(), get line control");
out_uint8(out, pser_inf->stop_bits);
out_uint8(out, pser_inf->parity);
out_uint8(out, pser_inf->word_length);
break;
case SERIAL_IMMEDIATE_CHAR:
logger(Protocol, Debug, "serial_device_control(), immediate char");
in_uint8(in, immediate);
serial_write(handle, &immediate, 1, 0, &result);
break;
case SERIAL_CONFIG_SIZE:
logger(Protocol, Debug, "serial_device_control(), config size");
out_uint32_le(out, 0);
break;
case SERIAL_GET_CHARS:
logger(Protocol, Debug, "serial_device_control(), get chars");
out_uint8a(out, pser_inf->chars, 6);
break;
case SERIAL_SET_CHARS:
logger(Protocol, Debug, "serial_device_control(), set chars");
in_uint8a(in, pser_inf->chars, 6);
set_termios(pser_inf, handle);
break;
case SERIAL_GET_HANDFLOW:
logger(Protocol, Debug, "serial_device_control(), get handflow");
get_termios(pser_inf, handle);
out_uint32_le(out, pser_inf->control);
out_uint32_le(out, pser_inf->xonoff); /* Xon/Xoff */
out_uint32_le(out, pser_inf->onlimit);
out_uint32_le(out, pser_inf->offlimit);
break;
case SERIAL_SET_HANDFLOW:
in_uint32_le(in, pser_inf->control);
in_uint32_le(in, pser_inf->xonoff);
in_uint32_le(in, pser_inf->onlimit);
in_uint32_le(in, pser_inf->offlimit);
logger(Protocol, Debug,
"serial_device_control(), set handflow, control=%x, xonoff=%x, onlimit=%x, offlimit=%x",
pser_inf->control, pser_inf->xonoff, pser_inf->onlimit,
pser_inf->offlimit);
set_termios(pser_inf, handle);
break;
case SERIAL_SET_TIMEOUTS:
in_uint32(in, pser_inf->read_interval_timeout);
in_uint32(in, pser_inf->read_total_timeout_multiplier);
in_uint32(in, pser_inf->read_total_timeout_constant);
in_uint32(in, pser_inf->write_total_timeout_multiplier);
in_uint32(in, pser_inf->write_total_timeout_constant);
logger(Protocol, Debug,
"serial_device_control(), set timeouts, timeout=%d, multiplier=%d, constant=%d",
pser_inf->read_interval_timeout,
pser_inf->read_total_timeout_multiplier,
pser_inf->read_total_timeout_constant);
break;
case SERIAL_GET_TIMEOUTS:
logger(Protocol, Debug,
"serial_device_control(), get timeouts, timeout=%d, multiplier=%d, constant=%d",
pser_inf->read_interval_timeout,
pser_inf->read_total_timeout_multiplier,
pser_inf->read_total_timeout_constant);
out_uint32(out, pser_inf->read_interval_timeout);
out_uint32(out, pser_inf->read_total_timeout_multiplier);
out_uint32(out, pser_inf->read_total_timeout_constant);
out_uint32(out, pser_inf->write_total_timeout_multiplier);
out_uint32(out, pser_inf->write_total_timeout_constant);
break;
case SERIAL_GET_WAIT_MASK:
logger(Protocol, Debug, "serial_device_control(), get wait mask, mask=0x%x",
pser_inf->wait_mask);
out_uint32(out, pser_inf->wait_mask);
break;
case SERIAL_SET_WAIT_MASK:
in_uint32(in, pser_inf->wait_mask);
logger(Protocol, Debug, "serial_device_control(), set wait mask, mask=0x%x",
pser_inf->wait_mask);
break;
case SERIAL_SET_DTR:
logger(Protocol, Debug, "serial_device_control(), set dtr");
ioctl(handle, TIOCMGET, &result);
result |= TIOCM_DTR;
ioctl(handle, TIOCMSET, &result);
pser_inf->dtr = 1;
break;
case SERIAL_CLR_DTR:
logger(Protocol, Debug, "serial_device_control(), clear dtr");
ioctl(handle, TIOCMGET, &result);
result &= ~TIOCM_DTR;
ioctl(handle, TIOCMSET, &result);
pser_inf->dtr = 0;
break;
case SERIAL_SET_RTS:
logger(Protocol, Debug, "serial_device_control(), set rts");
ioctl(handle, TIOCMGET, &result);
result |= TIOCM_RTS;
ioctl(handle, TIOCMSET, &result);
pser_inf->rts = 1;
break;
case SERIAL_CLR_RTS:
logger(Protocol, Debug, "serial_device_control(), clear rts");
ioctl(handle, TIOCMGET, &result);
result &= ~TIOCM_RTS;
ioctl(handle, TIOCMSET, &result);
pser_inf->rts = 0;
break;
case SERIAL_GET_MODEMSTATUS:
modemstate = 0;
#ifdef TIOCMGET
ioctl(handle, TIOCMGET, &result);
if (result & TIOCM_CTS)
modemstate |= SERIAL_MS_CTS;
if (result & TIOCM_DSR)
modemstate |= SERIAL_MS_DSR;
if (result & TIOCM_RNG)
modemstate |= SERIAL_MS_RNG;
if (result & TIOCM_CAR)
modemstate |= SERIAL_MS_CAR;
if (result & TIOCM_DTR)
modemstate |= SERIAL_MS_DTR;
if (result & TIOCM_RTS)
modemstate |= SERIAL_MS_RTS;
#endif
logger(Protocol, Debug,
"serial_device_control(), get modem status, state=0x%x", modemstate);
out_uint32_le(out, modemstate);
break;
case SERIAL_GET_COMMSTATUS:
out_uint32_le(out, 0); /* Errors */
out_uint32_le(out, 0); /* Hold reasons */
result = 0;
#ifdef TIOCINQ
ioctl(handle, TIOCINQ, &result);
#endif
out_uint32_le(out, result); /* Amount in in queue */
if (result)
logger(Protocol, Debug,
"serial_device_control(), get comm status, %d bytes in input queue",
result);
result = 0;
#ifdef TIOCOUTQ
ioctl(handle, TIOCOUTQ, &result);
#endif
out_uint32_le(out, result); /* Amount in out queue */
if (result)
logger(Protocol, Debug,
"serial_device_control(), get comm status, %d bytes in output queue",
result);
out_uint8(out, 0); /* EofReceived */
out_uint8(out, 0); /* WaitForImmediate */
break;
case SERIAL_PURGE:
in_uint32(in, purge_mask);
logger(Protocol, Debug, "serial_device_control(), purge, mask=0x%x",
purge_mask);
if ((purge_mask & SERIAL_PURGE_TXCLEAR)
&& (purge_mask & SERIAL_PURGE_RXCLEAR))
tcflush(handle, TCIOFLUSH);
else if (purge_mask & SERIAL_PURGE_TXCLEAR)
tcflush(handle, TCOFLUSH);
else if (purge_mask & SERIAL_PURGE_RXCLEAR)
tcflush(handle, TCIFLUSH);
if (purge_mask & SERIAL_PURGE_TXABORT)
rdpdr_abort_io(handle, 4, RD_STATUS_CANCELLED);
if (purge_mask & SERIAL_PURGE_RXABORT)
rdpdr_abort_io(handle, 3, RD_STATUS_CANCELLED);
break;
case SERIAL_WAIT_ON_MASK:
logger(Protocol, Debug, "serial_device_control(), wait on mask, mask=0x%x",
pser_inf->wait_mask);
pser_inf->event_pending = 1;
if (serial_get_event(handle, &result))
{
logger(Protocol, Debug,
"serial_device_control(), wait end, event=0x%x", result);
out_uint32_le(out, result);
break;
}
return RD_STATUS_PENDING;
break;
case SERIAL_SET_BREAK_ON:
logger(Protocol, Debug, "serial_device_control(), set break on");
tcsendbreak(handle, 0);
break;
case SERIAL_RESET_DEVICE:
logger(Protocol, Debug, "serial_device_control(), reset device");
break;
case SERIAL_SET_BREAK_OFF:
logger(Protocol, Debug, "serial_device_control(), set break off");
break;
case SERIAL_SET_XOFF:
logger(Protocol, Debug, "serial_device_control(), set xoff");
break;
case SERIAL_SET_XON:
logger(Protocol, Debug, "serial_device_control(), set xon");
tcflow(handle, TCION);
break;
default:
logger(Protocol, Warning, "serial_device_control(), unhandled ioctl %d",
request);
return RD_STATUS_INVALID_PARAMETER;
}
return RD_STATUS_SUCCESS;
}
RD_BOOL
serial_get_event(RD_NTHANDLE handle, uint32 * result)
{
int index;
SERIAL_DEVICE *pser_inf;
int bytes;
RD_BOOL ret = False;
*result = 0;
index = get_device_index(handle);
if (index < 0)
return False;
#ifdef TIOCINQ
pser_inf = (SERIAL_DEVICE *) g_rdpdr_device[index].pdevice_data;
ioctl(handle, TIOCINQ, &bytes);
if (bytes > 0)
{
logger(Protocol, Debug, "serial_get_event(), %d bytes", bytes);
if (bytes > pser_inf->event_rlsd)
{
pser_inf->event_rlsd = bytes;
if (pser_inf->wait_mask & SERIAL_EV_RLSD)
{
logger(Protocol, Debug,
"serial_get_event(), SERIAL_EV_RLSD is set");
*result |= SERIAL_EV_RLSD;
ret = True;
}
}
if ((bytes > 1) && (pser_inf->wait_mask & SERIAL_EV_RXFLAG))
{
logger(Protocol, Debug,
"serial_get_event(), SERIAL_EV_RXFLAG is set, %d bytes", bytes);
*result |= SERIAL_EV_RXFLAG;
ret = True;
}
if ((pser_inf->wait_mask & SERIAL_EV_RXCHAR))