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/*
ttymodes.c
Author: Tatu Ylonen <ylo@cs.hut.fi>
Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
All rights reserved
Created: Tue Mar 21 15:59:15 1995 ylo
Encoding and decoding of terminal modes in a portable way.
Much of the format is defined in ttymodes.h; it is included multiple times
into this file with the appropriate macro definitions to generate the
suitable code.
*/
/*
* $Id: ttymodes.c,v 1.4 1998/04/17 00:42:50 kivinen Exp $
* $Log: ttymodes.c,v $
* Revision 1.4 1998/04/17 00:42:50 kivinen
* Fixed previous fix.
*
* Revision 1.3 1998/03/27 17:05:47 kivinen
* Combine ECHOE and LCRTBS/LCRTERA flags.
*
* Revision 1.2 1996/10/29 22:47:53 kivinen
* log -> log_msg.
*
* Revision 1.1.1.1 1996/02/18 21:38:12 ylo
* Imported ssh-1.2.13.
*
* Revision 1.6 1995/10/02 01:29:44 ylo
* Changed warning message to make it less likely people will
* report it as a bug because it is not.
*
* Revision 1.5 1995/09/27 02:19:11 ylo
* Use SPEED_T_IN_STDTYPES_H.
*
* Revision 1.4 1995/09/09 21:26:48 ylo
* /m/shadows/u2/users/ylo/ssh/README
*
* Revision 1.3 1995/08/18 22:58:34 ylo
* Added support for NextStep.
* Fixed typos with EXTB.
*
* Revision 1.2 1995/07/13 01:41:15 ylo
* Removed "Last modified" header.
* Added cvs log.
*
* $Endlog$
*/
#include "includes.h"
#include "packet.h"
#include "ssh.h"
#define TTY_OP_END 0
#define TTY_OP_ISPEED 192 /* int follows */
#define TTY_OP_OSPEED 193 /* int follows */
/* Speed extraction & setting macros for sgtty. */
#ifdef USING_SGTTY
#define cfgetospeed(tio) ((tio)->sg_ospeed)
#define cfgetispeed(tio) ((tio)->sg_ispeed)
#define cfsetospeed(tio, spd) ((tio)->sg_ospeed = (spd), 0)
#define cfsetispeed(tio, spd) ((tio)->sg_ispeed = (spd), 0)
#ifndef SPEED_T_IN_STDTYPES_H
typedef char speed_t;
#endif
#endif
/* Converts POSIX speed_t to a baud rate. The values of the constants
for speed_t are not themselves portable. */
static int speed_to_baud(speed_t speed)
{
switch (speed)
{
case B0:
return 0;
case B50:
return 50;
case B75:
return 75;
case B110:
return 110;
case B134:
return 134;
case B150:
return 150;
case B200:
return 200;
case B300:
return 300;
case B600:
return 600;
case B1200:
return 1200;
case B1800:
return 1800;
case B2400:
return 2400;
case B4800:
return 4800;
case B9600:
return 9600;
#ifdef B19200
case B19200:
return 19200;
#else /* B19200 */
#ifdef EXTA
case EXTA:
return 19200;
#endif /* EXTA */
#endif /* B19200 */
#ifdef B38400
case B38400:
return 38400;
#else /* B38400 */
#ifdef EXTB
case EXTB:
return 38400;
#endif /* EXTB */
#endif /* B38400 */
#ifdef B7200
case B7200:
return 7200;
#endif /* B7200 */
#ifdef B14400
case B14400:
return 14400;
#endif /* B14400 */
#ifdef B28800
case B28800:
return 28800;
#endif /* B28800 */
#ifdef B57600
case B57600:
return 57600;
#endif /* B57600 */
#ifdef B76800
case B76800:
return 76800;
#endif /* B76800 */
#ifdef B115200
case B115200:
return 115200;
#endif /* B115200 */
#ifdef B230400
case B230400:
return 230400;
#endif /* B230400 */
default:
return 9600;
}
}
/* Converts a numeric baud rate to a POSIX speed_t. */
static speed_t baud_to_speed(int baud)
{
switch (baud)
{
case 0:
return B0;
case 50:
return B50;
case 75:
return B75;
case 110:
return B110;
case 134:
return B134;
case 150:
return B150;
case 200:
return B200;
case 300:
return B300;
case 600:
return B600;
case 1200:
return B1200;
case 1800:
return B1800;
case 2400:
return B2400;
case 4800:
return B4800;
case 9600:
return B9600;
#ifdef B19200
case 19200:
return B19200;
#else /* B19200 */
#ifdef EXTA
case 19200:
return EXTA;
#endif /* EXTA */
#endif /* B19200 */
#ifdef B38400
case 38400:
return B38400;
#else /* B38400 */
#ifdef EXTB
case 38400:
return EXTB;
#endif /* EXTB */
#endif /* B38400 */
#ifdef B7200
case 7200:
return B7200;
#endif /* B7200 */
#ifdef B14400
case 14400:
return B14400;
#endif /* B14400 */
#ifdef B28800
case 28800:
return B28800;
#endif /* B28800 */
#ifdef B57600
case 57600:
return B57600;
#endif /* B57600 */
#ifdef B76800
case 76800:
return B76800;
#endif /* B76800 */
#ifdef B115200
case 115200:
return B115200;
#endif /* B115200 */
#ifdef B230400
case 230400:
return B230400;
#endif /* B230400 */
default:
return B9600;
}
}
/* Encodes terminal modes for the terminal referenced by fd in a portable
manner, and appends the modes to a packet being constructed. */
void tty_make_modes(int fd)
{
#ifdef USING_TERMIOS
struct termios tio;
#endif
#ifdef USING_SGTTY
struct sgttyb tio;
struct tchars tiotc;
struct ltchars tioltc;
int tiolm;
#ifdef TIOCGSTAT
struct tstatus tiots;
#endif /* TIOCGSTAT */
#endif /* USING_SGTTY */
int baud;
/* Get the modes. */
#ifdef USING_TERMIOS
if (tcgetattr(fd, &tio) < 0)
{
packet_put_char(TTY_OP_END);
log_msg("tcgetattr: %.100s", strerror(errno));
return;
}
#endif /* USING_TERMIOS */
#ifdef USING_SGTTY
if (ioctl(fd, TIOCGETP, &tio) < 0)
{
packet_put_char(TTY_OP_END);
log_msg("ioctl(fd, TIOCGETP, ...): %.100s", strerror(errno));
return;
}
if (ioctl(fd, TIOCGETC, &tiotc) < 0)
{
packet_put_char(TTY_OP_END);
log_msg("ioctl(fd, TIOCGETC, ...): %.100s", strerror(errno));
return;
}
if (ioctl(fd, TIOCLGET, &tiolm) < 0)
{
packet_put_char(TTY_OP_END);
log_msg("ioctl(fd, TIOCLGET, ...): %.100s", strerror(errno));
return;
}
if (ioctl(fd, TIOCGLTC, &tioltc) < 0)
{
packet_put_char(TTY_OP_END);
log_msg("ioctl(fd, TIOCGLTC, ...): %.100s", strerror(errno));
return;
}
#ifdef TIOCGSTAT
if (ioctl(fd, TIOCGSTAT, &tiots) < 0)
{
packet_put_char(TTY_OP_END);
log_msg("ioctl(fd, TIOCGSTAT, ...): %.100s", strerror(errno));
return;
}
#endif /* TIOCGSTAT */
/* termio's ECHOE is really both LCRTBS and LCRTERA - so wire them
together */
if (tiolm & LCRTBS)
tiolm |= LCRTERA;
#endif /* USING_SGTTY */
/* Store input and output baud rates. */
baud = speed_to_baud(cfgetospeed(&tio));
packet_put_char(TTY_OP_OSPEED);
packet_put_int(baud);
baud = speed_to_baud(cfgetispeed(&tio));
packet_put_char(TTY_OP_ISPEED);
packet_put_int(baud);
/* Store values of mode flags. */
#ifdef USING_TERMIOS
#define TTYCHAR(NAME, OP) \
packet_put_char(OP); packet_put_char(tio.c_cc[NAME]);
#define TTYMODE(NAME, FIELD, OP) \
packet_put_char(OP); packet_put_char((tio.FIELD & NAME) != 0);
#define SGTTYCHAR(NAME, OP)
#define SGTTYMODE(NAME, FIELD, OP)
#define SGTTYMODEN(NAME, FIELD, OP)
#endif /* USING_TERMIOS */
#ifdef USING_SGTTY
#define TTYCHAR(NAME, OP)
#define TTYMODE(NAME, FIELD, OP)
#define SGTTYCHAR(NAME, OP) \
packet_put_char(OP); packet_put_char(NAME);
#define SGTTYMODE(NAME, FIELD, OP) \
packet_put_char(OP); packet_put_char((FIELD & NAME) != 0);
#define SGTTYMODEN(NAME, FIELD, OP) \
packet_put_char(OP); packet_put_char((FIELD & NAME) == 0);
#endif /* USING_SGTTY */
#include "ttymodes.h"
#undef TTYCHAR
#undef TTYMODE
#undef SGTTYCHAR
#undef SGTTYMODE
#undef SGTTYMODEN
/* Mark end of mode data. */
packet_put_char(TTY_OP_END);
}
/* Decodes terminal modes for the terminal referenced by fd in a portable
manner from a packet being read. */
void tty_parse_modes(int fd)
{
#ifdef USING_TERMIOS
struct termios tio;
#endif /* USING_TERMIOS */
#ifdef USING_SGTTY
struct sgttyb tio;
struct tchars tiotc;
struct ltchars tioltc;
int tiolm;
#ifdef TIOCGSTAT
struct tstatus tiots;
#endif /* TIOCGSTAT */
#endif
int opcode, baud;
/* Get old attributes for the terminal. We will modify these flags.
I am hoping that if there are any machine-specific modes, they will
initially have reasonable values. */
#ifdef USING_TERMIOS
if (tcgetattr(fd, &tio) < 0)
return;
#endif /* USING_TERMIOS */
#ifdef USING_SGTTY
if (ioctl(fd, TIOCGETP, &tio) < 0)
return;
if (ioctl(fd, TIOCGETC, &tiotc) < 0)
return;
if (ioctl(fd, TIOCLGET, &tiolm) < 0)
return;
if (ioctl(fd, TIOCGLTC, &tioltc) < 0)
return;
#ifdef TIOCGSTAT
if (ioctl(fd, TIOCGSTAT, &tiots) < 0)
return;
#endif /* TIOCGSTAT */
#endif /* USING_SGTTY */
for (;;)
{
switch (opcode = packet_get_char())
{
case TTY_OP_END:
goto set;
case TTY_OP_ISPEED:
baud = packet_get_int();
if (cfsetispeed(&tio, baud_to_speed(baud)) < 0)
error("cfsetispeed failed for %d", baud);
break;
case TTY_OP_OSPEED:
baud = packet_get_int();
if (cfsetospeed(&tio, baud_to_speed(baud)) < 0)
error("cfsetospeed failed for %d", baud);
break;
#ifdef USING_TERMIOS
#define TTYCHAR(NAME, OP) \
case OP: \
tio.c_cc[NAME] = packet_get_char(); \
break;
#define TTYMODE(NAME, FIELD, OP) \
case OP: \
if (packet_get_char()) \
tio.FIELD |= NAME; \
else \
tio.FIELD &= ~NAME; \
break;
#define SGTTYCHAR(NAME, OP)
#define SGTTYMODE(NAME, FIELD, OP)
#define SGTTYMODEN(NAME, FIELD, OP)
#endif /* USING_TERMIOS */
#ifdef USING_SGTTY
#define TTYCHAR(NAME, OP)
#define TTYMODE(NAME, FIELD, OP)
#define SGTTYCHAR(NAME, OP) \
case OP: \
NAME = packet_get_char(); \
break;
#define SGTTYMODE(NAME, FIELD, OP) \
case OP: \
if (packet_get_char()) \
FIELD |= NAME; \
else \
FIELD &= ~NAME; \
break;
#define SGTTYMODEN(NAME, FIELD, OP) \
case OP: \
if (packet_get_char()) \
FIELD &= ~NAME; \
else \
FIELD |= NAME; \
break;
#endif /* USING_SGTTY */
#include "ttymodes.h"
#undef TTYCHAR
#undef TTYMODE
#undef SGTTYCHAR
#undef SGTTYMODE
#undef SGTTYMODEN
default:
debug("Ignoring unsupported tty mode opcode %d (0x%x)",
opcode, opcode);
/* Opcodes 0 to 127 are defined to have a one-byte argument. */
if (opcode >= 0 && opcode < 128)
{
(void)packet_get_char();
break;
}
else
{
/* Opcodes 128 to 159 are defined to have an integer argument. */
if (opcode >= 128 && opcode < 160)
{
(void)packet_get_int();
break;
}
}
/* It is a truly undefined opcode (160 to 255). We have no idea
about its arguments. So we must stop parsing. Note that some
data may be left in the packet; hopefully there is nothing more
coming after the mode data. */
log_msg("parse_tty_modes: unknown opcode %d", opcode);
goto set;
}
}
set:
/* Set the new modes for the terminal. */
#ifdef USING_TERMIOS
if (tcsetattr(fd, TCSANOW, &tio) < 0)
log_msg("Setting tty modes failed: %.100s", strerror(errno));
#endif /* USING_TERMIOS */
#ifdef USING_SGTTY
/* termio's ECHOE is really both LCRTBS and LCRTERA -
so wire them together */
if (tiolm & LCRTERA)
tiolm |= LCRTBS;
if (ioctl(fd, TIOCSETP, &tio) < 0
|| ioctl(fd, TIOCSETC, &tiotc) < 0
|| ioctl(fd, TIOCLSET, &tiolm) < 0
|| ioctl(fd, TIOCSLTC, &tioltc) < 0
#ifdef TIOCSSTAT
|| ioctl(fd, TIOCSSTAT, &tiots) < 0
#endif /* TIOCSSTAT */
)
log_msg("Setting tty modes failed: %.100s", strerror(errno));
#endif /* USING_SGTTY */
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.