/*
Receive sequence -- see if expected response comes return success
(or failure) in got_it
*/
static
recvSeq() {
char *e, got[7], trace[SBUFL];
int i, l;
sequenc();
l = strlen(e=seq_buf); /* no more than 7 chars allowed */
if (l > 7) {
e += l-7;
l = 7;
}
tlog(F111,"expecting sequence",e,(long) l);
if (l == 0) { /* null sequence, just delay a little */
sleep (NULL_EXP);
got_it = 1;
tlog(F100,"got it (null sequence)","",0l);
return;
}
*trace = '\0';
for (i=0; i<7; i++) got[i]='\0';
signal(SIGALRM,scrtime); /* did we get it? */
if (!setjmp(alrmRng)) { /* not timed out yet */
alarm(EXP_ALRM);
while (!got_it) {
for (i=0; i<(l-1); i++) got[i] = got[i+1]; /* shift over one */
got[l-1] = ttinc(0) & 0177; /* next char */
if (seslog) /* Log in session log */
zchout(ZSFILE,got[l-1]);
if (strlen(trace) < sizeof(trace)-2 )
strcat(trace,chstr(got[l-1]));
got_it = (!strncmp(seq_buf, got, l) ) ;
}
} else got_it = 0; /* timed out here */
alarm(0);
signal(SIGALRM,SIG_IGN);
tlog(F110,"received sequence: ",trace,0l);
tlog(F101,"returning with got-it code","",(long) got_it);
return;
}
int
qnxinc(void)
{
extern int pmask, cmask;
extern int tt_utf8;
int ch;
loop:
ch = ttinc(0);
if ( ch < 0 )
return ch;
if ( seslog )
logchar(ch);
/* Handle the UTF8 conversion if we are in that mode */
if ( tt_utf8 ) {
USHORT * ucs2 = NULL;
int rc = utf8_to_ucs2( (CHAR)(ch & 0xFF), &ucs2 );
if ( rc > 0 )
goto loop;
else if ( rc < 0 )
ch = 0xfffd;
else
ch = *ucs2;
}
if ( !xprint ) {
#ifndef NOXFER
autodown(ch);
#endif /* NOXFER */
autoexitchk(ch);
}
ch = ch & pmask & cmask;
debugses(ch);
if (printon && (is_xprint() || is_uprint()))
prtchar(ch);
return ch;
}
unsigned sytek_int( unsigned ax /*, unsigned dx */ )
{
unsigned char ah;
unsigned char ch;
/* int sent; */
unsigned int status;
if ( !s ) {
return( 0x1000 ); /* timeout */
}
if (chk_timeout( recvtimeout )) {
do_reception();
recvtimeout = set_ttimeout( 2 ); /* 10 ms */
}
/* disable(); receive_clock = RECEIVE_TICKS; enable(); } */
ah = ax >> 8;
if( ah == 1 ) { /* send char in AL */
ch = ax & 0x0FF;
/* if (ch == '\r') ch = '\n'; */
if( ((tran_in + 1) % TRANSMIT_BUF_SIZE) == tran_out ) {
outs( "?tr_buf_full?" );
status = 0x08000 | ch;
} else {
if ((ch == '\r') && echo ) stuff_char( '\n' );
else stuff_char( ch );
status = 0x06000 | ch;
/* local echoing if requested */
if ( echo ) {
receive_buffer[ rec_in ] = ch;
rec_in = (rec_in + 1) % RECEIVE_BUF_SIZE;
if (ch == '\r') {
receive_buffer[ rec_in ] = '\n';
rec_in = (rec_in + 1) % RECEIVE_BUF_SIZE;
}
}
}
} else if( ah == 2 ) { /* receive char into AL */
do {
ch = 0;
if( rec_in == rec_out )
status = 0x08000;
else {
status = ch = (ttinc( 0 ) & 0xff);
if ( ch == IAC ) {
/* process this stuff */
ch = ttinc( 0 );
if ( ch == IAC ) ch = 0; /* let it pass through */
else tn_doop(ch);
}
}
} while ( ch == IAC );
/* status = 0x0800; timeout */
}
else if( ah == 3 ) { /* get status */
if( rec_in == rec_out )
status = 0x06010;
else {
status = 0x06110;
}
} else if( ah == 0 ) { /* init port */
status = 0x06010;
} else {
status = ax;
outs( "?command_err?" );
}
/* here we do the io */
if( transmit_clock <= 0 ) {
do_transmission();
disable();
transmit_clock = TRANSMIT_TICKS;
enable();
}
return( status );
}
int tn_doop(int c)
{
int x, y, n, flag;
x = ttinc(0) & 0xff; /* Read command character */
switch (x) {
case TELOPT_ECHO: /* ECHO negotiation. */
if (c == WILL) { /* Host says it will echo. */
if (echo) { /* Only reply if change required */
echo = 0;
if (send_iac(DO,x)) /* Please do. */
return(-1);
}
return(0);
}
if (c == WONT) { /* Host says it won't echo. */
if (!echo) { /* If I'm not echoing already */
if (send_iac(DONT,x)) /* agree to echo. */
return(-1);
echo = 1;
}
return(0);
}
if (c == DO) { /* Host wants me to echo */
if (send_iac(WONT,x)) /* I say I won't, */
return(-1);
if (send_iac(DO,x)) /* and ask the host to echo. */
return(-1);
echo = 0;
return( 0 );
}
if (c == DONT) { /* Host wants me not to echo */
if (send_iac(WONT,x)) /* I say I won't. */
return(-1);
echo = 0;
return( 0 );
}
return(0);
case TELOPT_SGA: /* Suppress Go-Ahead */
if (c == WONT) { /* Host says it won't. */
sgaflg = 1; /* Remember. */
if (!echo) { /* If we're not echoing, */
if (send_iac(DONT,x)) /* acknowledge, */
return(-1);
echo = 1; /* and switch to local echo. */
}
}
if (c == WILL) { /* Host says it will. */
sgaflg = 0; /* Remember. */
if (echo) { /* If I'm echoing now, */
if (send_iac(DO,x)) /* this is a change, so ACK. */
return(-1);
if (send_iac(DO,TELOPT_ECHO)) /* Request remote echo */
return(-1);
}
}
return(0);
case TELOPT_TTYPE: /* Terminal Type */
switch (c) {
case DO: /* DO terminal type. */
if (send_iac(WILL,x)) /* Say I'll send it if asked. */
return(-1);
return(0);
/* enter subnegociations */
case SB:
n = flag = 0; /* Flag for when done reading SB */
while (n < TSBUFSIZ) { /* Loop looking for IAC SE */
if ((y = ttinc(0)) < 0)
return(-1);
y &= 0xff; /* Make sure it's just 8 bits. */
sb[n++] = y; /* Save what we got in buffer. */
if (y == IAC) { /* If this is an IAC */
flag = 1; /* set the flag. */
} else { /* Otherwise, */
if (flag && y == SE) /* if this is SE which immediately */
break; /* follows IAC, we're done. */
else flag = 0; /* Otherwise turn off flag. */
}
}
if (!flag)
return(-1); /* Make sure we got a valid SB */
if ( *sb == 1 ) {
if ( tn_sttyp() )
return(-1);
};
default: /* Others, ignore */
return(0);
}
default: /* All others: refuse */
switch(c) {
case WILL: /* You will? */
if (send_iac(DONT,x)) /* Please don't. */
return(-1);
break;
case DO: /* You want me to? */
if (send_iac(WONT,x)) /* I won't. */
return(-1);
if (send_iac(DONT,x)) /* Don't you either. */
return(-1);
break;
case DONT: /* (fall thru...) */
if (send_iac(WONT,x)) /* I won't. */
return(-1);
case WONT: /* You won't? */
break; /* Good. */
}
return(0);
}
}