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ckutio.c
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ckutio.c
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#ifndef NOICP
char *ckxv = " TTY IO, 4G(096)";
#endif /* ifndef NOICP */
/* C K U T I O */
/* SPDX-License-Identifier: BSD-3-Clause */
/* uCKermit interrupt, terminal control & I/O functions for UNIX systems */
/*
* Copyright (c) 2021, 2022, 2023 Jeffrey H. Johnson <[email protected]>
*
* Copyright (c) 1981-2011,
* Trustees of Columbia University in the City of New York.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* - Neither the name of Columbia University nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h> /* Types */
#include <ctype.h> /* Character types */
#include <sys/dir.h> /* Directory */
#ifdef NULL
#undef NULL
#endif /* ifdef NULL */
#include <signal.h> /* Interrupts */
#include <stdio.h> /* UNIX Standard i/o */
#include <setjmp.h> /* Longjumps */
#include "ckcdeb.h" /* Typedefs, formats for debug() */
#ifdef __linux__
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/stat.h>
#endif /* ifdef __linux__ */
#ifndef DEVNAMLEN
#define DEVNAMLEN 25
#endif /* ifndef DEVNAMLEN */
#ifndef NOICP
#ifdef BSD4
#define ANYBSD
#ifdef MAXNAMLEN
#define BSD42
#ifdef SUNOS4
char *ckxsys = " SunOS 4.x";
#else /* ifdef SunOS4 */
#ifdef ultrix
char *ckxsys = " VAX/Ultrix";
#else /* ifdef ultrix */
#ifdef BSD43
char *ckxsys = " 4.3 BSD";
#else /* ifdef BSD43 */
char *ckxsys = " 4.2 BSD";
#endif /* bsd43 */
#endif /* ultrix */
#endif /* sunos4 */
#else /* ifdef MAXNAMLEN */
#define BSD41
char *ckxsys = " 4.1 BSD";
#endif /* maxnamlen */
#endif /* bsd4 */
#ifdef BSD29
#define ANYBSD
char *ckxsys = " 2.9 BSD";
#endif /* bsd29 */
#ifdef V7
char *ckxsys = " Version 7 UNIX";
#endif /* v7 */
#ifdef UXIII
#ifdef XENIX
#ifdef M_I386
char *ckxsys = " Xenix/386";
#else /* ifdef M_I386 */
#ifdef M_I286
char *ckxsys = " Xenix/286";
#else /* ifdef M_I286 */
char *ckxsys = " Xenix/86";
#endif /* ifdef M_I286 */
#endif /* ifdef M_I386 */
#else /* ifdef XENIX */
#ifdef ISIII
char *ckxsys = " ISC System III";
#else /* ifdef ISIII */
#ifdef hpux
char *ckxsys = " HP 9000 Series HP-UX";
#else /* ifdef hpux */
#ifdef __linux__
char *ckxsys = " GNU/Linux";
#else /* ifdef __linux__ */
char *ckxsys = " AT&T System III/System V";
#endif /* linux */
#endif /* hpux */
#endif /* isiii */
#endif /* xenix */
#endif /* uxiii */
#endif /* ifndef NOICP */
void ztime(char **s);
void rtimer();
long ttsspd(long speed);
char coninc(int timo);
#ifdef NEWUUCP
#define LCKDIR
#endif /* ifdef NEWUUCP */
#ifdef ATT3BX
#define HDBUUCP
#endif /* ifdef ATT3BX */
#ifndef LOCK_DIR
#ifdef ISIII
#define LOCK_DIR "/etc/locks";
#else /* ifdef ISIII */
#ifdef HDBUUCP
#define LOCK_DIR "/usr/spool/locks";
#else /* ifdef HDBUUCP */
#ifdef LCKDIR
#define LOCK_DIR "/usr/spool/uucp/LCK";
#else /* ifdef LCKDIR */
#define LOCK_DIR "/usr/spool/uucp";
#endif /* LCKDIR */
#endif /* HDBUUCP */
#endif /* ISIII */
#endif /* !LOCK_DIR (outside ifndef) */
#ifdef UXIII
#define MYREAD
#endif /* uxiii */
#ifdef BSD42
#undef MYREAD
#include <errno.h>
#endif /* bsd42 */
/*
* Variables available to outside world:
*
* dftty -- Pointer to default tty name string, like "/dev/tty".
* dfloc -- 0 if dftty is console, 1 if external line.
* dfprty -- Default parity
* dfflow -- Default flow control
* ckxech -- Flag for who echoes console typein:
* 1 - The program (system echo is turned off)
* 0 - The system (or front end, or terminal).
* functions that want to do their own echoing should check this flag
* before doing so.
*
* flfnam -- Name of lock file, including its path, e.g.,
* "/usr/spool/uucp/LCK..cul0" or "/etc/locks/tty77"
* hasLock -- Flag set if this kermit established a uucp lock.
* inbufc -- number of tty line rawmode unread characters
* (system III/V unixes)
* backgrd -- Flag indicating program executing in background ( & on
* end of shell command). Used to ignore INT and QUIT signals.
* rtu_bug -- Set by stptrap(). RTU treats ^Z as EOF.
* (but only when we handle SIGTSTP)
*
* Functions for assigned communication line
* (either external or console tty):
*
* sysinit() -- System dependent program initialization
* syscleanup() -- System dependent program shutdown
* ttopen(ttname,local,mdmtyp) -- Open the named tty for exclusive access.
* ttclos() -- Close & reset the tty,
* releasing any access lock.
* ttpkt(speed,flow) -- Put the tty in packet mode and set the speed.
* ttvt(speed,flow) -- Put the tty in virtual terminal mode.
* or in DIALING or CONNECTED modem
* control state.
* ttinl(dest,max,timo) -- Timed read line from the tty.
* ttinc(timo) -- Timed read character from tty.
* myread() -- System 3 raw mode bulk buffer read, gives
* subsequent chars one at a time and simulates
* FIONREAD!
* myunrd(c) -- Places c back in buffer to be read (one only)
* ttchk() -- See how many characters in tty input buffer.
* ttxin(n,buf) -- Read n characters from tty (untimed).
* ttol(string,length) -- Write a string to the tty.
* ttoc(c) -- Write a character to the tty.
* ttflui() -- Flush tty input buffer.
*
* ttlock(ttname) -- Lock against uucp collisions (Sys III)
* ttunlck() -- Unlock " " "
* look4lk(ttname) -- Check if a lock file exists
*
* For ATT7300/UNIX PC, Sys III, Sys V:
* attdial(ttname,speed,telnbr) -- dials ATT7300/UNIX PC internal modem
* atthang(ttname) -- Hangs up internal modem for ATT7300's
* offgetty(ttname) -- Turns off getty(1m) for comms line
* ongetty(ttname) -- Restores getty() to comms line
*/
/*
* Functions for console terminal:
*
* congm() - Get console terminal modes.
* concb(esc) - Put the console in single-character wakeup mode without echo
* conbin(esc) - Put the console in binary (raw) mode.
* conres() - Restore the console to mode obtained by congm().
* conoc(c) - Unbuffered output, one character to console.
* conol(s) - Unbuffered output, null-terminated string to the console.
* conola(s) - Unbuffered output, array of strings to the console.
* conxo(n,s) - Unbuffered output, n characters to the console.
* conchk() - Check if characters available at console (bsd 4.2).
* Check if escape char (^\) typed at console (System III/V).
* coninc(timo) - Timed get a character from the console.
* conint() - Enable terminal interrupts on the console if not background.
* connoi() - Disable terminal interrupts on the console if not background.
*
* Time functions
*
* msleep(m) -- Millisecond sleep
* ztime(&s) -- Return pointer to date/time string
* rtimer() -- Reset timer
* gtimer() -- Get elapsed time since last call to rtimer()
*/
#ifndef XENIX
#ifndef unos
#include <sys/file.h> /* File information */
#endif /* ifndef unos */
#endif /* ifndef XENIX */
#ifdef BSD4
#include <fcntl.h>
#include <sys/file.h>
#endif /* ifdef BSD4 */
#ifdef UXIII
#ifdef CK_TERMIOS
#include <termios.h>
#else
#include <termio.h>
#endif /* ifdef CK_TERMIOS */
#include <sys/ioctl.h>
#include <errno.h> /* error numbers for system returns */
#include <fcntl.h> /* directory reading for locking */
#endif /* ifdef UXIII */
#ifdef HPUX
#include <sys/modem.h>
#endif /* ifdef HPUX */
#ifndef UXIII
#include <sgtty.h> /* Set/Get tty modes */
#ifndef V7
#ifndef BSD41
#include <sys/time.h> /* Clock info (for break generation) */
#endif /* ifndef BSD41 */
#endif /* ifndef V7 */
#endif /* ifndef UXIII */
#ifdef BSD41
#include <sys/timeb.h> /* BSD 4.1 ... ceb */
#endif /* ifdef BSD41 */
#ifdef BSD29
#include <sys/timeb.h> /* BSD 2.9 (Vic Abell, Purdue) */
#endif /* ifdef BSD29 */
#ifdef ultrix
#include <sys/ioctl.h>
#endif /* ifdef ultrix */
/*
* The following two conditional #defines
* are catch-alls for those systems that
* didn't have or couldn't find <file.h>
*/
#ifndef FREAD
#define FREAD 0x01
#endif /* ifndef FREAD */
#ifndef FWRITE
#define FWRITE 0x10
#endif /* ifndef FWRITE */
long time(); /* All UNIXes should have this... */
extern int errno; /* System call error code. */
/*
* Special stuff for V7
* input buffer peeking
*/
#ifdef V7
int kmem[2] = {
-1, -1
};
char *initrawq(), *qaddr[2] =
{
0, 0
};
#define CON 0
#define TTY 1
#endif /* ifdef V7 */
/*
* dftty is the device name of the default
* device for file transfer. dfloc is 0 if
* dftty is the user's console terminal,
* and 1 if an external line
*/
char *dftty = CTTNAM; /* Remote by default, use normal */
int dfloc = 0; /* controlling terminal name. */
int dfprty = 0; /* Default parity (0 = none) */
int ttprty = 0; /* Parity in use. */
int ttmdm = 0; /* Modem in use. */
int dfflow = 1; /* Xon/Xoff flow control */
int backgrd = 0; /* Assume in foreground (no '&' ) */
#ifdef ultrix
int iniflags = 0; /* fcntl flags for ttyfd */
#endif /* ifdef ultrix */
int ckxech = 0; /* 0 if system normally echoes */
/* console characters, else 1 */
#ifndef NOSTATS
static long tcount; /* Elapsed time counter */
#endif /* ifndef NOSTATS */
static jmp_buf sjbuf, jjbuf; /* Longjump buffer */
static int lkf = 0, /* Line lock flag */
conif = 0, /* Console interrupts on/off flag */
cgmf = 0, /* Flag that console modes saved */
xlocal = 0, /* Flag for tty local or remote */
ttyfd = -1; /* TTY file descriptor */
static char escchr; /* Escape or attn character */
#ifdef BSD42
#include <time.h>
#include <sys/time.h>
static struct timeval tv; /* For getting time, from sys/time.h */
static struct timezone tz;
#endif /* ifdef BSD42 */
#ifdef BSD29
static long clock; /* For getting time from sys/time.h */
static struct timeb ftp; /* And from sys/timeb.h */
#endif /* ifdef BSD29 */
#ifdef BSD41
static long clock; /* For getting time from sys/time.h */
static struct timeb ftp; /* And from sys/timeb.h */
#endif /* ifdef BSD41 */
#ifdef V7
static long clock;
#endif /* ifdef V7 */
#ifdef UXIII
#ifdef CK_TERMIOS
#define LTERMIO termios
#else
#define LTERMIO termio
#endif /* ifdef CK_TERMIOS */
static struct LTERMIO ttold = { 0 }; /* Init'd for word alignment, */
static struct LTERMIO ttraw = { 0 }; /* which is important for some */
static struct LTERMIO tttvt = { 0 }; /* systems, like Zilog... */
static struct LTERMIO ccold = { 0 };
static struct LTERMIO ccraw = { 0 };
static struct LTERMIO cccbrk = { 0 };
#else /* ifdef UXIII */
static struct sgttyb /* sgtty info... */
ttold, ttraw, tttvt, ttbuf,
ccold, ccraw, cccbrk, vanilla;
#endif /* ifdef UXIII */
static char flfnam[80]; /* UUCP lock file path name */
static int hasLock = 0; /* =1 if this kermit locked uucp */
static int inbufc = 0; /* stuff for efficient SIII raw line */
static int ungotn = -1; /* pushback to unread character */
static int conesc = 0; /* set to 1 if esc char (^\) typed */
static int ttlock(); /* definition of ttlock subprocedure */
static int ttunlck(); /* and unlock subprocedure */
static char ttnmsv[DEVNAMLEN + 1]; /* copy of open path for tthang */
/* S Y S I N I T -- System-dependent program initialization */
int
sysinit()
{
#ifdef BSD42
(void)tv;
(void)tz;
#endif /* ifdef BSD42 */
#ifdef ultrix
gtty(0, &vanilla); /* Get sgtty info */
iniflags = fcntl(0, F_GETFL, 0); /* Get flags */
#else /* ifdef ultrix */
#ifdef AUX
set42sig(); /* Don't ask! ([email protected]) */
#endif /* aux */
#endif /* ifdef ultrix */
return ( 0 );
}
/* S Y S C L E A N U P -- System-dependent program cleanup */
int
syscleanup()
{
#ifdef ultrix
stty(0, &vanilla); /* Get sgtty info */
fcntl(0, F_SETFL, iniflags); /* Restore flags */
#endif /* ifdef ultrix */
return ( 0 );
}
/* T T O P E N -- Open a tty for exclusive access */
/*
* Returns 0 on success, -1 on failure
*
* If called with lcl < 0, sets value of lcl as follows:
* 0: the terminal named by ttname is the job's controlling terminal.
* 1: the terminal named by ttname is not the job's controlling terminal.
* But watch out: if a line is already open, or if requested line can't
* be opened, then lcl remains (and is returned as) -1.
*/
int
ttopen(ttname, lcl, modem)
char *ttname;
int *lcl, modem;
{
#ifdef UXIII
char *ctermid(); /* Wish they all had this! */
#endif /* ifdef UXIII */
char *x;
extern char *ttyname();
char cname[DEVNAMLEN + 4];
if (ttyfd > -1) /* if comms line already opened */
{
if (strncmp(
ttname, ttnmsv, DEVNAMLEN)) /* are new & old names equal? */
{
ttclos(); /* no, close old ttname, open new */
}
else /* else same, ignore this call */
{
return ( 0 );
}
}
ttmdm = modem; /* Make this available to other fns */
xlocal = *lcl; /* Make this available to other fns */
#ifdef NEWUUCP
acucntrl("disable", ttname); /* Open getty on line (4.3BSD) */
#endif /* ifdef NEWUUCP */
/*
* In the following section, we open the tty device for read/write.
* If a modem has been specified via "set modem" prior to "set line"
* then the O_NDELAY parameter is used in the open, provided this symbol
* is defined (e.g. in fcntl.h), so that the program does not hang waiting
* for carrier (which in most cases won't be present because a connection
* has not been dialed yet). It would make more sense to first determine
* if the line is local before doing this, but because ttyname() requires a
* file descriptor, we have to open first.
*/
#ifdef UXIII
ttyfd = open(ttname, O_RDWR | ( modem ? O_NDELAY : 0 ));
#else /* not uxiii */
#ifdef O_NDELAY
ttyfd = open(ttname, O_RDWR | ( modem ? O_NDELAY : 0 ));
#else /* O_NDELAY not defined */
ttyfd = open(ttname, 2);
#endif /* O_NDELAY */
#endif /* uxiii */
debug(F111, "ttopen", "modem", modem);
debug(F101, " ttyfd", "", ttyfd);
if (ttyfd < 0) /* If couldn't open, fail. */
{
perror(ttname);
return ( -1 );
}
strncpy(
ttnmsv, ttname, DEVNAMLEN); /* Open, keep copy of name locally. */
/*
* Caller wants us to figure out
* if line is controlling tty
*/
debug(F111, "ttopen ok", ttname, *lcl);
if (*lcl != 0)
{
if (strcmp(ttname, CTTNAM) == 0) /* /dev/tty is always remote */
{
xlocal = 0;
debug(F111, " ttname=CTTNAM", ttname, xlocal);
}
else if (isatty(0)) /* Else, if stdin not redirected */
{
x = ttyname(0); /* then compare its device name */
strncpy(cname, x, DEVNAMLEN); /* (copy from internal static buf) */
#ifdef __linux__
x = cname;
#else /* ifdef __linux__ */
x = ttyname(ttyfd); /* ...with real name of ttname. */
#endif /* ifdef __linux__ */
if (x == NULL)
{
return ( 0 );
}
#ifdef __linux__
xlocal = 1;
#else /* ifdef __linux__ */
xlocal = ( strncmp(x, cname, DEVNAMLEN) == 0 ) ? 0 : 1;
#endif /* ifdef __linux__ */
debug(F111, " ttyname", x, xlocal);
}
else /* Else, if stdin redirected... */
{
#ifdef UXIII
/*
* Sys III/V provides nice ctermid() function
* to get name of controlling tty
*/
ctermid(cname); /* Get name of controlling terminal */
debug(F110, " ctermid", cname, 0);
x = ttyname(ttyfd); /* Compare with name of comm line. */
xlocal = ( strncmp(x, cname, DEVNAMLEN) == 0 ) ? 0 : 1;
debug(F111, " ttyname", x, xlocal);
#else /* ifdef UXIII */
/*
* Just assume local, so "set speed"
* and similar commands will work
* If not really local, how could
* it work anyway?...
*/
xlocal = 1;
debug(F101, " redirected stdin", "", xlocal);
#endif /* uxiii */
}
}
/*
* Note, the following code was added so that UNIX "idle-line" snoopers
* would not think Kermit was idle when it was transferring files, and
* maybe log people out. But it had to be removed because it broke
* one of UNIX Kermit's very useful features, sending from standard input,
* as in "kermit -s - < file" or "command | kermit -s -". Too bad...
*
* If we're not local, close the ttyfd and just use 0
*/
/*
* if (xlocal == 0) {
* close(ttyfd);
* ttyfd = 0;
* }
*/
/*
* Now check if line is locked --
* if so fail, else lock for ourselves
*/
lkf = 0; /* Check lock */
if (xlocal > 0)
{
if (ttlock(ttname) < 0)
{
fprintf(stderr, "Exclusive access to %s denied\n", ttname);
close(ttyfd);
ttyfd = -1;
debug(F110, " Access denied by lock", ttname, 0);
return ( -1 ); /* Not if already locked */
}
else
{
lkf = 1;
}
}
/*
* Got the line, now set the
* desired value for local.
*/
if (*lcl != 0)
{
*lcl = xlocal;
}
/*
* Some "special"
* stuff for UNIX v7
*/
#ifdef V7
if (kmem[TTY] < 0) /* If open, then skip this. */
{
qaddr[TTY] = initrawq(ttyfd); /* Init the queue. */
if (( kmem[TTY] = \
open("/dev/kmem", 0)) < 0)
{
fprintf(
stderr,
"Can't read /dev/kmem in ttopen.\n");
perror("/dev/kmem");
exit(1);
}
}
#endif /* ifdef V7 */
/*
* no failure returns
* after this point
*/
#ifndef XENIX
#ifndef unos
#ifdef TIOCEXCL
if (xlocal)
{
if (ioctl(ttyfd, TIOCEXCL, NULL) < 0)
{
#ifndef NODOHLP
fprintf(
stderr,
"Warning, problem getting exclusive access\n");
#else /* NODOHLP */
fprintf(
stderr,
"TIOCEXCL failed\n");
#endif /* NODOHLP */
}
}
#endif /* ifdef TIOCEXCL */
#endif /* ifndef unos */
#endif /* ifndef XENIX */
#ifdef ultrix
if (xlocal)
{
int temp = 0;
#ifdef TIOCSINUSE
if (ioctl(ttyfd, TIOCSINUSE, NULL) < 0)
{
fprintf(stderr, "Can't set in-use flag on modem.\n");
perror("TIOCSINUSE");
}
#endif /* ifdef TIOCSINUSE */
if (modem)
{
ioctl(ttyfd, TIOCMODEM, &temp);
ioctl(ttyfd, TIOCHPCL, 0);
}
else
{
ioctl(ttyfd, TIOCNMODEM, &temp);
}
}
#endif /* ifdef ultrix */
/*
* Get tty
* device settings
*/
#ifndef UXIII
gtty(ttyfd, &ttold); /* Get sgtty info */
if (xlocal)
{
ttold.sg_flags &= ~ECHO; /* Turn off echo on local line */
}
gtty(ttyfd, &ttraw); /* And a copy of it for packets */
gtty(ttyfd, &tttvt); /* And one for virtual tty service */
#else /* ifndef UXIII */
ioctl(ttyfd, TCGETA, &ttold); /* Same deal for Sys III, Sys V */
if (xlocal)
{
ttold.c_lflag &= ~ECHO; /* Turn off echo on local line. */
}
ioctl(ttyfd, TCGETA, &ttraw);
ioctl(ttyfd, TCGETA, &tttvt);
#endif /* ifndef UXIII */
#ifdef DEBUG
debug(F101, "ttopen, ttyfd", "", ttyfd);
debug(F101, " lcl", "", *lcl);
debug(F111, " lock file", flfnam, lkf);
#endif /* ifdef DEBUG */
return ( 0 );
}
/* T T C L O S -- Close the TTY, releasing any lock */
#ifdef COMMENT
SIGTYP
ttclosx() /* To avoid pointer type mismatches */
{
ttclos();
}
#endif /* ifdef COMMENT */
int
ttclos()
{
debug(F101, "ttclos", "", ttyfd);
if (ttyfd < 0)
{
return ( 0 ); /* Wasn't open. */
}
#ifdef ultrix
if (xlocal)
{
ioctl(ttyfd, TIOCNCAR, NULL);
}
#endif /* ifdef ultrix */
if (xlocal)
{
if (ttunlck()) /* Release UUCP-style lock */
{
#ifndef NODOHLP
fprintf(stderr, "Warning, problem releasing lock\r\n");
#else /* ifndef NODOHLP */
fprintf(stderr, "ttunlck failed\r\n");
#endif /* ifndef NODOHLP */
}
if (tthang()) /* Hang up phone line */
{
#ifndef NODOHLP
fprintf(stderr, "Warning, problem hanging up the phone\r\n");
#else /* ifndef NODOHLP */
fprintf(stderr, "tthang failed\r\n");
#endif /* ifndef NODOHLP */
}
}
ttres(); /* Reset modes. */
/*
* Relinquish exclusive access
* if we might have had it...
*/
#ifndef XENIX
#ifndef unos
#ifdef TIOCEXCL
#ifdef TIOCNXCL
if (xlocal)
{
if (ioctl(ttyfd, TIOCNXCL, NULL) < 0)
{
#ifndef NODOHLP
fprintf(
stderr,
"Warning, problem relinquishing exclusive access\r\n");
#else /* ifndef NODOHLP */
fprintf(
stderr,
"TIOCNXCL failed\r\n");
#endif /* ifndef NODOHLP */
}
}
#endif /* ifdef TIOCNXCL */
#endif /* ifdef TIOCEXCL */
#endif /* ifndef unos */
#endif /* ifndef XENIX */
if (ttyfd > 0)
{
close(ttyfd); /* Close it if tthang didn't */
}
ttyfd = -1; /* Mark it as closed. */
#ifdef NEWUUCP
acucntrl("enable", flfnam); /* Close getty on line. */
#endif /* ifdef NEWUUCP */
debug(F101, "ttclose exit", "", ttyfd);
return ( 0 );
}
/* T T H A N G -- Hangup phone line */
int
tthang()
{
#ifdef UXIII
#ifdef HPUX
unsigned long dtr_down = 00000000000, modem_rtn;
#else /* ifdef HPUX */
unsigned short ttc_save;
#endif /* ifdef HPUX */
#endif /* ifdef UXIII */
#ifdef ANYBSD
int ttc_save;
#endif /* ifdef ANYBSD */
if (ttyfd < 0)
{
return ( 0 ); /* Not open. */
}
if (xlocal < 1)
{
return ( 0 ); /* Don't do if not local */
}
#ifdef ANYBSD
#ifdef BSD42
ttc_save = fcntl(ttyfd, F_GETFL, 0); /* Get flags */
#endif /* ifdef BSD42 */
ioctl(ttyfd, TIOCCDTR, 0); /* Clear DTR */
msleep(550); /* For about 1/2 sec */
ioctl(ttyfd, TIOCSDTR, 0); /* Restore DTR */
#ifdef COMMENT
close(ttyfd); /* Close/reopen fd */
if (( ttyfd = open(ttnmsv, ttc_save)) < 0)
{
perror(ttnmsv); /* If can't, give message */
ttunlck(); /* and unlock the file */
return ( -1 );
}
#endif /* ifdef COMMENT */
#endif /* ifdef ANYBSD */
#ifdef UXIII
#ifdef HPUX /* HP way of modem control */
if (ioctl(ttyfd, MCSETAF, &dtr_down) < 0)
{
return ( -1 ); /* lower DTR */
}
msleep(550);
if (ioctl(ttyfd, MCGETA, &modem_rtn) < 0)
{
return ( -1 ); /* get line status */
}
if (( modem_rtn & MDCD ) != 0)
{
return ( -1 ); /* check if DCD is low */
}
modem_rtn = MRTS | MDTR; /* bits for RTS & DTR */
if (ioctl(ttyfd, MCSETAF, &modem_rtn) < 0)
{
return ( -1 ); /* set lines */
}
#else /* ifdef HPUX */
ttc_save = ttraw.c_cflag;
ttraw.c_cflag &= ~CBAUD; /* baud rate to 0 to hangup */
if (ioctl(ttyfd, TCSETAF, &ttraw) < 0)
{
return ( -1 ); /* do it */
}
msleep(125); /* let things settle */
ttraw.c_cflag = ttc_save;
/*
* NOTE - The following #ifndef...#endif
* can be removed for SCO Xenix 2.1.3
* or later, but must keep for earlier
* versions, which can't do close/open.
*/
#ifndef XENIX
ttc_save = fcntl(ttyfd, F_GETFL, 0);
(void)ttc_save;
close(ttyfd); /* close/reopen file descriptor */
ttyfd = -1; /* in case reopen fails */
#ifndef UXIII
if (( ttyfd = open(ttnmsv, ttc_save)) < 0)
{
return ( -1 );
}
#else /* ifndef UXIII */
if (( ttyfd = open(ttnmsv, O_RDWR | O_NDELAY)) < 0)
{
return ( -1 );
}
/*
* So Kermit hangup command works
* even if there is no carrier
*/
#endif /* ifndef UXIII */
#endif /* ifndef XENIX */
if (ioctl(ttyfd, TCSETAF, &ttraw) < 0)
{
return ( -1 ); /* un-do it */
}
#endif /* ifdef HPUX */
#endif /* ifdef UXIII */
return ( 0 );
}
/* T T R E S -- Restore terminal to "normal" mode */
int
ttres()
{ /* Restore the tty to normal. */
int x;
(void)x;
if (ttyfd < 0)
{
return ( -1 ); /* Not open. */
}
#ifndef UXIII /* except for sIII, */
sleep(1); /* Wait for i/o to finish. */
#endif /* (sIII does wait in ioctls) */
#ifdef UXIII
if (ioctl(ttyfd, TCSETAW, &ttold) < 0)
{
return ( -1 ); /* restore termio stuff */
}
if (ttmdm)
{
if (fcntl(ttyfd, F_SETFL, fcntl(ttyfd, F_GETFL, 0) & \
~O_NDELAY) < 0)
{
return ( -1 );
}
}
return ( 0 );
#else /* ifdef UXIII */
#ifdef MYREAD
#ifdef FIONBIO
x = 0;
x = ioctl(ttyfd, FIONBIO, &x);
if (x < 0)
{
perror("ttres ioctl");
debug(F101, "ttres ioctl", "", x);
}
#else /* ifdef FIONBIO */
#ifdef FNDELAY
x =
( fcntl(
ttyfd,
F_SETFL,