/*
* clientstat
*
* Process linemode related requests from the client.
* Client can request a change to only one of linemode, editmode or slc's
* at a time, and if using kludge linemode, then only linemode may be
* affected.
*/
void
clientstat(int code, int parm1, int parm2)
{
/*
* Get a copy of terminal characteristics.
*/
init_termbuf();
/*
* Process request from client. code tells what it is.
*/
switch (code) {
case TELOPT_NAWS:
#ifdef TIOCSWINSZ
{
struct winsize ws;
def_col = parm1;
def_row = parm2;
/*
* Change window size as requested by client.
*/
ws.ws_col = parm1;
ws.ws_row = parm2;
ioctl(ourpty, TIOCSWINSZ, (char *)&ws);
}
#endif /* TIOCSWINSZ */
break;
case TELOPT_TSPEED:
{
def_tspeed = parm1;
def_rspeed = parm2;
/*
* Change terminal speed as requested by client.
* We set the receive speed first, so that if we can't
* store seperate receive and transmit speeds, the transmit
* speed will take precedence.
*/
tty_rspeed(parm2);
tty_tspeed(parm1);
set_termbuf();
break;
} /* end of case TELOPT_TSPEED */
default:
/* What? */
break;
} /* end of switch */
netflush();
}
/*
* clientstat
*
* Process linemode related requests from the client.
* Client can request a change to only one of linemode, editmode or slc's
* at a time, and if using kludge linemode, then only linemode may be
* affected.
*/
void
clientstat(int code, int parm1, int parm2)
{
/*
* Get a copy of terminal characteristics.
*/
init_termbuf();
/*
* Process request from client. code tells what it is.
*/
switch (code) {
#ifdef LINEMODE
case TELOPT_LINEMODE:
/*
* Don't do anything unless client is asking us to change
* modes.
*/
uselinemode = (parm1 == WILL);
if (uselinemode != linemode) {
# ifdef KLUDGELINEMODE
/*
* If using kludge linemode, make sure that
* we can do what the client asks.
* We can not turn off linemode if alwayslinemode
* and the ICANON bit is set.
*/
if (lmodetype == KLUDGE_LINEMODE) {
if (alwayslinemode && tty_isediting()) {
uselinemode = 1;
}
}
/*
* Quit now if we can't do it.
*/
if (uselinemode == linemode)
return;
/*
* If using real linemode and linemode is being
* turned on, send along the edit mode mask.
*/
if (lmodetype == REAL_LINEMODE && uselinemode)
# else /* KLUDGELINEMODE */
if (uselinemode)
# endif /* KLUDGELINEMODE */
{
useeditmode = 0;
if (tty_isediting())
useeditmode |= MODE_EDIT;
if (tty_istrapsig())
useeditmode |= MODE_TRAPSIG;
if (tty_issofttab())
useeditmode |= MODE_SOFT_TAB;
if (tty_islitecho())
useeditmode |= MODE_LIT_ECHO;
output_data("%c%c%c%c%c%c%c", IAC,
SB, TELOPT_LINEMODE, LM_MODE,
useeditmode, IAC, SE);
editmode = useeditmode;
}
tty_setlinemode(uselinemode);
linemode = uselinemode;
if (!linemode)
send_will(TELOPT_ECHO, 1);
}
break;
case LM_MODE:
{
int ack, changed;
/*
* Client has sent along a mode mask. If it agrees with
* what we are currently doing, ignore it; if not, it could
* be viewed as a request to change. Note that the server
* will change to the modes in an ack if it is different from
* what we currently have, but we will not ack the ack.
*/
useeditmode &= MODE_MASK;
ack = (useeditmode & MODE_ACK);
useeditmode &= ~MODE_ACK;
if ((changed = (useeditmode ^ editmode))) {
/*
* This check is for a timing problem. If the
* state of the tty has changed (due to the user
* application) we need to process that info
* before we write in the state contained in the
* ack!!! This gets out the new MODE request,
* and when the ack to that command comes back
* we'll set it and be in the right mode.
*/
if (ack)
localstat();
if (changed & MODE_EDIT)
tty_setedit(useeditmode & MODE_EDIT);
if (changed & MODE_TRAPSIG)
tty_setsig(useeditmode & MODE_TRAPSIG);
if (changed & MODE_SOFT_TAB)
tty_setsofttab(useeditmode & MODE_SOFT_TAB);
if (changed & MODE_LIT_ECHO)
tty_setlitecho(useeditmode & MODE_LIT_ECHO);
set_termbuf();
if (!ack) {
output_data("%c%c%c%c%c%c%c", IAC,
SB, TELOPT_LINEMODE, LM_MODE,
useeditmode|MODE_ACK,
IAC, SE);
}
editmode = useeditmode;
}
break;
} /* end of case LM_MODE */
#endif /* LINEMODE */
case TELOPT_NAWS:
#ifdef TIOCSWINSZ
{
struct winsize ws;
def_col = parm1;
def_row = parm2;
#ifdef LINEMODE
/*
* Defer changing window size until after terminal is
* initialized.
*/
if (terminit() == 0)
return;
#endif /* LINEMODE */
/*
* Change window size as requested by client.
*/
ws.ws_col = parm1;
ws.ws_row = parm2;
(void) ioctl(spty, TIOCSWINSZ, (char *)&ws);
}
#endif /* TIOCSWINSZ */
break;
case TELOPT_TSPEED:
{
def_tspeed = parm1;
def_rspeed = parm2;
#ifdef LINEMODE
/*
* Defer changing the terminal speed.
*/
if (terminit() == 0)
return;
#endif /* LINEMODE */
/*
* Change terminal speed as requested by client.
* We set the receive speed first, so that if we can't
* store separate receive and transmit speeds, the transmit
* speed will take precedence.
*/
tty_rspeed(parm2);
tty_tspeed(parm1);
set_termbuf();
break;
} /* end of case TELOPT_TSPEED */
default:
/* What? */
break;
} /* end of switch */
netflush();
} /* end of clientstat */
static int getptyslave(void) {
#if 0
register int t = -1;
# ifdef LINEMODE
int waslm;
# endif
# ifdef TIOCGWINSZ
struct winsize ws;
# endif
/*
* Opening the slave side may cause initilization of the
* kernel tty structure. We need remember the state of
* if linemode was turned on
* terminal window size
* terminal speed
* so that we can re-set them if we need to.
*/
# ifdef LINEMODE
waslm = tty_linemode();
# endif
/*
* Make sure that we don't have a controlling tty, and
* that we are the session (process group) leader.
*/
t = open(_PATH_TTY, O_RDWR);
if (t >= 0) {
ioctl(t, TIOCNOTTY, (char *)0);
close(t);
}
t = cleanopen(line);
if (t < 0) fatalperror(net, line);
#endif /* 0 */
struct winsize ws;
int t = ptyslavefd;
/*
* set up the tty modes as we like them to be.
*/
init_termbuf();
# ifdef TIOCGWINSZ
if (def_row || def_col) {
bzero((char *)&ws, sizeof(ws));
ws.ws_col = def_col;
ws.ws_row = def_row;
ioctl(t, TIOCSWINSZ, (char *)&ws);
}
# endif
/*
* Settings for all other termios/termio based
* systems, other than 4.4BSD. In 4.4BSD the
* kernel does the initial terminal setup.
*
* XXX what about linux?
*/
# ifndef OXTABS
# define OXTABS 0
# endif
termbuf.c_lflag |= ECHO;
termbuf.c_oflag |= OPOST|ONLCR|OXTABS;
termbuf.c_iflag |= ICRNL;
termbuf.c_iflag &= ~IXOFF;
tty_rspeed((def_rspeed > 0) ? def_rspeed : 9600);
tty_tspeed((def_tspeed > 0) ? def_tspeed : 9600);
# ifdef LINEMODE
if (waslm) tty_setlinemode(1);
# endif /* LINEMODE */
/*
* Set the tty modes, and make this our controlling tty.
*/
set_termbuf();
if (login_tty(t) == -1) fatalperror(net, "login_tty");
if (net > 2) close(net);
if (pty > 2) close(pty);
return t;
}
void
getptyslave(void)
{
int t = -1;
#ifdef LINEMODE
int waslm;
#endif
struct winsize ws;
/*
* Opening the slave side may cause initilization of the
* kernel tty structure. We need remember the state of
* if linemode was turned on
* terminal window size
* terminal speed
* so that we can re-set them if we need to.
*/
#ifdef LINEMODE
waslm = tty_linemode();
#endif
/*
* Make sure that we don't have a controlling tty, and
* that we are the session (process group) leader.
*/
t = open(_PATH_TTY, O_RDWR);
if (t >= 0) {
(void) ioctl(t, TIOCNOTTY, (char *)0);
(void) close(t);
}
t = cleanopen(line);
if (t < 0)
fatalperror(net, line);
/*
* set up the tty modes as we like them to be.
*/
init_termbuf();
if (def_row || def_col) {
memset((char *)&ws, 0, sizeof(ws));
ws.ws_col = def_col;
ws.ws_row = def_row;
(void)ioctl(t, TIOCSWINSZ, (char *)&ws);
}
/*
* Settings for sgtty based systems
*/
/*
* Settings for all other termios/termio based
* systems, other than 4.4BSD. In 4.4BSD the
* kernel does the initial terminal setup.
*/
tty_rspeed((def_rspeed > 0) ? def_rspeed : 9600);
tty_tspeed((def_tspeed > 0) ? def_tspeed : 9600);
#ifdef LINEMODE
if (waslm)
tty_setlinemode(1);
#endif /* LINEMODE */
/*
* Set the tty modes, and make this our controlling tty.
*/
set_termbuf();
if (login_tty(t) == -1)
fatalperror(net, "login_tty");
if (net > 2)
(void) close(net);
if (pty > 2) {
(void) close(pty);
pty = -1;
}
}
/*
* getptyslave()
*
* Open the slave side of the pty, and do any initialization
* that is necessary. The return value is a file descriptor
* for the slave side.
*/
void getptyslave(void)
{
int t = -1;
struct winsize ws;
/*
* Opening the slave side may cause initilization of the
* kernel tty structure. We need remember the state of
* if linemode was turned on
* terminal window size
* terminal speed
* so that we can re-set them if we need to.
*/
/*
* Make sure that we don't have a controlling tty, and
* that we are the session (process group) leader.
*/
#ifdef HAVE_SETSID
if(setsid()<0)
fatalperror(net, "setsid()");
#else
# ifdef TIOCNOTTY
t = open(_PATH_TTY, O_RDWR);
if (t >= 0) {
ioctl(t, TIOCNOTTY, (char *)0);
close(t);
}
# endif
#endif
# ifdef PARENT_DOES_UTMP
/*
* Wait for our parent to get the utmp stuff to get done.
*/
utmp_sig_wait();
# endif
t = cleanopen(line);
if (t < 0)
fatalperror(net, line);
#ifdef STREAMSPTY
ttyfd = t;
/*
* Not all systems have (or need) modules ttcompat and pckt so
* don't flag it as a fatal error if they don't exist.
*/
if (really_stream)
{
/* these are the streams modules that we want pushed. note
that they are in reverse order, ptem will be pushed
first. maybe_push_modules() will try to push all modules
before the first one that isn't already pushed. i.e if
ldterm is pushed, only ttcompat will be attempted.
all this is because we don't know which modules are
available, and we don't know which modules are already
pushed (via autopush, for instance).
*/
char *ttymodules[] = { "ttcompat", "ldterm", "ptem", NULL };
char *ptymodules[] = { "pckt", NULL };
maybe_push_modules(t, ttymodules);
maybe_push_modules(ourpty, ptymodules);
}
#endif
/*
* set up the tty modes as we like them to be.
*/
init_termbuf();
# ifdef TIOCSWINSZ
if (def_row || def_col) {
memset(&ws, 0, sizeof(ws));
ws.ws_col = def_col;
ws.ws_row = def_row;
ioctl(t, TIOCSWINSZ, (char *)&ws);
}
# endif
/*
* Settings for sgtty based systems
*/
/*
* Settings for UNICOS (and HPUX)
*/
# if defined(_CRAY) || defined(__hpux)
termbuf.c_oflag = OPOST|ONLCR|TAB3;
termbuf.c_iflag = IGNPAR|ISTRIP|ICRNL|IXON;
termbuf.c_lflag = ISIG|ICANON|ECHO|ECHOE|ECHOK;
termbuf.c_cflag = EXTB|HUPCL|CS8;
# endif
/*
* Settings for all other termios/termio based
* systems, other than 4.4BSD. In 4.4BSD the
* kernel does the initial terminal setup.
*/
# if !(defined(_CRAY) || defined(__hpux)) && (BSD <= 43)
# ifndef OXTABS
# define OXTABS 0
# endif
termbuf.c_lflag |= ECHO;
termbuf.c_oflag |= ONLCR|OXTABS;
termbuf.c_iflag |= ICRNL;
termbuf.c_iflag &= ~IXOFF;
# endif
tty_rspeed((def_rspeed > 0) ? def_rspeed : 9600);
tty_tspeed((def_tspeed > 0) ? def_tspeed : 9600);
/*
* Set the tty modes, and make this our controlling tty.
*/
set_termbuf();
if (login_tty(t) == -1)
fatalperror(net, "login_tty");
if (net > 2)
close(net);
if (ourpty > 2) {
close(ourpty);
ourpty = -1;
}
}
