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ceb052ecd6
deb-mbse/mbcico/openport.c
Michiel Broek 3a2b52a619 Finished telnet sessions
2004-02-01 21:17:40 +00:00

619 lines
12 KiB
C
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/*****************************************************************************
*
* $Id$
* File ..................: mbcico/openport.c
* Purpose ...............: Fidonet mailer
*
*****************************************************************************
* Copyright (C) 1997-2004
*
* Michiel Broek FIDO: 2:280/2802
* Beekmansbos 10
* 1971 BV IJmuiden
* the Netherlands
*
* This file is part of MBSE BBS.
*
* This BBS 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 2, or (at your option) any
* later version.
*
* MBSE BBS 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 MBSE BBS; see the file COPYING. If not, write to the Free
* Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*****************************************************************************/
#include "../config.h"
#include "../lib/libs.h"
#include "../lib/structs.h"
#include "../lib/common.h"
#include "../lib/clcomm.h"
#include "ulock.h"
#include "ttyio.h"
#include "mbcico.h"
#include "openport.h"
static char *openedport = NULL, *pname;
static int need_detach = 1;
extern int f_flags;
static speed_t transpeed(int);
int hanged_up = 0;
void linedrop(int sig)
{
Syslog('+', "openport: Lost Carrier");
hanged_up=1;
return;
}
void sigpipe(int sig)
{
Syslog('+', "openport: Got SIGPIPE");
hanged_up=1;
return;
}
void interrupt(int sig)
{
Syslog('+', "openport: Got SIGINT");
signal(SIGINT,interrupt);
return;
}
int openport(char *port, int speed)
{
int rc, rc2, fd, outflags;
char *errtty=NULL;
Syslog('t', "Try opening port \"%s\" at %d",MBSE_SS(port),speed);
if (openedport)
free(openedport);
openedport = NULL;
if (port[0] == '/')
openedport = xstrcpy(port);
else {
openedport = xstrcpy((char *)"/dev/");
openedport = xstrcat(openedport, port);
}
pname = strrchr(openedport, '/');
if ((rc = lock(pname))) {
Syslog('+', "Port %s is locked (rc = %d)", port, rc);
free(openedport);
openedport = NULL;
return rc;
}
if (need_detach) {
fflush(stdin);
fflush(stdout);
setbuf(stdin, NULL);
setbuf(stdout, NULL);
close(0);
close(1);
/*
* If we were manual started the error tty must be closed.
*/
if ((errtty = ttyname(2))) {
Syslog('t', "openport: stderr was on \"%s\", closing",errtty);
fflush(stderr);
close(2);
}
}
tty_status = 0;
hanged_up = 0;
Syslog('t', "SIGHUP => linedrop()");
signal(SIGHUP, linedrop);
Syslog('t', "SIGPIPE => sigpipe()");
signal(SIGPIPE, sigpipe);
Syslog('t', "SIGINT => interrupt()");
signal(SIGINT, interrupt);
rc = 0;
rc2 = 0;
if ((fd = open(openedport,O_RDONLY|O_NONBLOCK)) != 0) {
rc = 1;
Syslog('+', "$Cannot open \"%s\" as stdin",MBSE_SS(openedport));
fd = open("/dev/null",O_RDONLY);
}
if ((fd = open(openedport,O_WRONLY|O_NONBLOCK)) != 1) {
rc = 1;
Syslog('+', "$Cannot open \"%s\" as stdout",MBSE_SS(openedport));
fd = open("/dev/null",O_WRONLY);
}
clearerr(stdin);
clearerr(stdout);
if (need_detach) {
#ifdef TIOCSCTTY
if ((rc2 = ioctl(0,TIOCSCTTY,1L)) < 0) {
Syslog('t', "$TIOCSCTTY failed rc = %d", rc2);
}
#endif
if (errtty) {
rc = rc || (open(errtty,O_WRONLY) != 2);
}
need_detach=0;
}
if (rc)
Syslog('+', "cannot switch i/o to port \"%s\"",MBSE_SS(openedport));
else {
if (tty_raw(speed)) {
WriteError("$cannot set raw mode for \"%s\"",MBSE_SS(openedport));
rc=1;
}
if (((f_flags = fcntl(0, F_GETFL, 0L)) == -1) || ((outflags = fcntl(1, F_GETFL, 0L)) == -1)) {
rc = 1;
WriteError("$GETFL error");
f_flags = 0;
outflags = 0;
} else {
Syslog('t', "Return to blocking mode");
f_flags &= ~O_NONBLOCK;
outflags &= ~O_NONBLOCK;
if ((fcntl(0, F_SETFL, f_flags) != 0) || (fcntl(1, F_SETFL, outflags) != 0)) {
rc = 1;
WriteError("$SETFL error");
}
}
Syslog('t', "File flags: stdin: 0x%04x, stdout: 0x%04x", f_flags,outflags);
}
if (rc)
closeport();
else
SetTTY(port);
return rc;
}
/*
* Set port to local, hangup using DTR drop.
*/
void localport(void)
{
Syslog('t', "Setting port \"%s\" local",MBSE_SS(openedport));
Syslog('t', "SIGHUP => SIG_IGN");
signal(SIGHUP, SIG_IGN);
Syslog('t', "SIGPIPE => SIG_IGN");
signal(SIGPIPE, SIG_IGN);
if (isatty(0))
tty_local();
return;
}
void nolocalport(void)
{
Syslog('t', "Setting port \"%s\" non-local",MBSE_SS(openedport));
if (isatty(0))
tty_nolocal();
return;
}
int rawport(void)
{
tty_status = 0;
Syslog('t', "SIGHUP => linedrop()");
signal(SIGHUP, linedrop);
Syslog('t', "SIGPIPE => sigpipe()");
signal(SIGPIPE, sigpipe);
if (isatty(0))
return tty_raw(0);
else
return 0;
}
int cookedport(void)
{
Syslog('t', "SIGHUP => SIG_IGN");
signal(SIGHUP, SIG_IGN);
Syslog('t', "SIGPIPE => SIG_IGN");
signal(SIGPIPE, SIG_IGN);
if (isatty(0))
return tty_cooked();
else
return 0;
}
void closeport(void)
{
if (openedport == NULL)
return;
Syslog('t', "Closing port \"%s\"",MBSE_SS(openedport));
fflush(stdin);
fflush(stdout);
tty_cooked();
close(0);
close(1);
ulock(pname);
if (openedport)
free(openedport);
openedport = NULL;
SetTTY((char *)"-");
return;
}
void sendbrk(void)
{
Syslog('t', "Send break");
if (isatty(0)) {
#if (defined(TIOCSBRK))
Syslog('t', "TIOCSBRK");
ioctl(0, TIOCSBRK, 0L);
#elif (defined(TCSBRK))
Syslog('t', "TCSBRK");
ioctl(0, TCSBRK, 0L);
#else /* any ideas about BSD? */
;
#endif
}
}
char *bstr(speed_t);
char *bstr(speed_t sp)
{
#ifdef CBAUD
switch(sp & CBAUD) {
#else
switch(sp) {
#endif
case 0: return (char *)"0";
#if defined(B50)
case B50: return (char *)"50";
#endif
#if defined(B75)
case B75: return (char *)"75";
#endif
#if defined(B110)
case B110: return (char *)"110";
#endif
#if defined(B134)
case B134: return (char *)"134";
#endif
#if defined(B150)
case B150: return (char *)"150";
#endif
#if defined(B200)
case B200: return (char *)"200";
#endif
#if defined(B300)
case B300: return (char *)"300";
#endif
#if defined(B600)
case B600: return (char *)"600";
#endif
#if defined(B1200)
case B1200: return (char *)"1.200";
#endif
#if defined(B1800)
case B1800: return (char *)"1.800";
#endif
#if defined(B2400)
case B2400: return (char *)"2.400";
#endif
#if defined(B4800)
case B4800: return (char *)"4.800";
#endif
#if defined(B9600)
case B9600: return (char *)"9.600";
#endif
#if defined(B19200)
case B19200: return (char *)"19.200";
#endif
#if defined(B38400)
case B38400: return (char *)"38.400";
#endif
#if defined(B57600)
case B57600: return (char *)"57.600";
#endif
#if defined(B115200)
case B115200: return (char *)"115.200";
#endif
#if defined(B230400)
case B230400: return (char *)"230.400";
#endif
#if defined(B460800)
case B460800: return (char *)"460.800";
#endif
#if defined(B500000)
case B500000: return (char *)"500.000";
#endif
#if defined(B576000)
case B576000: return (char *)"576.000";
#endif
#if defined(B921600)
case B921600: return (char *)"921.600";
#endif
#if defined(B1000000)
case B1000000: return (char *)"1.000.000";
#endif
#if defined(B1152000)
case B1152000: return (char *)"1.152.000";
#endif
#if defined(B1500000)
case B1500000: return (char *)"1.500.000";
#endif
#if defined(B2000000)
case B2000000: return (char *)"2.000.000";
#endif
#if defined(B2500000)
case B2500000: return (char *)"2.500.000";
#endif
#if defined(B3000000)
case B3000000: return (char *)"3.000.000";
#endif
#if defined(B3500000)
case B3500000: return (char *)"3.500.000";
#endif
#if defined(B4000000)
case B4000000: return (char *)"4.000.000";
#endif
default: return (char *)"Unknown";
}
}
static struct termios savetios;
static struct termios tios;
int tty_raw(int speed)
{
int rc;
speed_t tspeed, is, os;
Syslog('t', "Set tty raw");
tspeed = transpeed(speed);
if ((rc = tcgetattr(0,&savetios))) {
WriteError("$tcgetattr(0,save) return %d",rc);
return rc;
}
tios = savetios;
tios.c_iflag = 0;
tios.c_oflag = 0;
tios.c_cflag &= ~(CSTOPB | PARENB | PARODD);
tios.c_cflag |= CS8 | CREAD | HUPCL | CLOCAL;
tios.c_lflag = 0;
tios.c_cc[VMIN] = 1;
tios.c_cc[VTIME] = 0;
if (tspeed) {
cfsetispeed(&tios,tspeed);
cfsetospeed(&tios,tspeed);
}
if ((rc = tcsetattr(0,TCSADRAIN,&tios)))
WriteError("$tcsetattr(0,TCSADRAIN,raw) return %d",rc);
is = cfgetispeed(&tios);
os = cfgetospeed(&tios);
return rc;
}
int tty_local(void)
{
struct termios Tios;
tcflag_t cflag;
speed_t ispeed, ospeed;
int rc;
if ((rc = tcgetattr(0,&Tios))) {
WriteError("$tcgetattr(0,save) return %d",rc);
return rc;
}
Syslog('+', "Lowering DTR to hangup");
cflag = Tios.c_cflag | CLOCAL;
ispeed = cfgetispeed(&tios);
ospeed = cfgetospeed(&tios);
cfsetispeed(&Tios,0);
cfsetospeed(&Tios,0);
if ((rc = tcsetattr(0,TCSADRAIN,&Tios)))
WriteError("$tcsetattr(0,TCSADRAIN,hangup) return %d",rc);
sleep(1); /* as far as I notice, DTR goes back high on next op. */
Tios.c_cflag = cflag;
cfsetispeed(&Tios,ispeed);
cfsetospeed(&Tios,ospeed);
if ((rc = tcsetattr(0,TCSADRAIN,&Tios)))
Syslog('t', "$tcsetattr(0,TCSADRAIN,clocal) return %d",rc);
return rc;
}
int tty_nolocal(void)
{
struct termios Tios;
int rc;
if ((rc = tcgetattr(0,&Tios))) {
WriteError("$tcgetattr(0,save) return %d",rc);
return rc;
}
Tios.c_cflag &= ~CLOCAL;
Tios.c_cflag |= CRTSCTS;
if ((rc = tcsetattr(0,TCSADRAIN,&Tios)))
Syslog('t', "$tcsetattr(0,TCSADRAIN,clocal) return %d",rc);
return rc;
}
int tty_cooked(void)
{
int rc;
if ((rc = tcsetattr(0,TCSAFLUSH,&savetios)))
Syslog('t', "$tcsetattr(0,TCSAFLUSH,save) return %d",rc);
return rc;
}
speed_t transpeed(int speed)
{
speed_t tspeed;
switch (speed) {
case 0: tspeed=0; break;
#if defined(B50)
case 50: tspeed=B50; break;
#endif
#if defined(B75)
case 75: tspeed=B75; break;
#endif
#if defined(B110)
case 110: tspeed=B110; break;
#endif
#if defined(B134)
case 134: tspeed=B134; break;
#endif
#if defined(B150)
case 150: tspeed=B150; break;
#endif
#if defined(B200)
case 200: tspeed=B200; break;
#endif
#if defined(B300)
case 300: tspeed=B300; break;
#endif
#if defined(B600)
case 600: tspeed=B600; break;
#endif
#if defined(B1200)
case 1200: tspeed=B1200; break;
#endif
#if defined(B1800)
case 1800: tspeed=B1800; break;
#endif
#if defined(B2400)
case 2400: tspeed=B2400; break;
#endif
#if defined(B4800)
case 4800: tspeed=B4800; break;
#endif
#if defined(B7200)
case 7200: tspeed=B7200; break;
#endif
#if defined(B9600)
case 9600: tspeed=B9600; break;
#endif
#if defined(B12000)
case 12000: tspeed=B12000; break;
#endif
#if defined(B14400)
case 14400: tspeed=B14400; break;
#endif
#if defined(B19200)
case 19200: tspeed=B19200; break;
#elif defined(EXTA)
case 19200: tspeed=EXTA; break;
#endif
#if defined(B38400)
case 38400: tspeed=B38400; break;
#elif defined(EXTB)
case 38400: tspeed=EXTB; break;
#endif
#if defined(B57600)
case 57600: tspeed=B57600; break;
#endif
#if defined(B115200)
case 115200: tspeed=B115200; break;
#endif
#if defined(B230400)
case 230400: tspeed=B230400; break;
#endif
#if defined(B460800)
case 460800: tspeed=B460800; break;
#endif
#if defined(B500000)
case 500000: tspeed=B500000; break;
#endif
#if defined(B576000)
case 576000: tspeed=B576000; break;
#endif
#if defined(B921600)
case 921600: tspeed=B921600; break;
#endif
#if defined(B1000000)
case 1000000: tspeed=B1000000; break;
#endif
#if defined(B1152000)
case 1152000: tspeed=B1152000; break;
#endif
#if defined(B1500000)
case 1500000: tspeed=B1500000; break;
#endif
#if defined(B2000000)
case 2000000: tspeed=B2000000; break;
#endif
#if defined(B2500000)
case 2500000: tspeed=B2500000; break;
#endif
#if defined(B3000000)
case 3000000: tspeed=B3000000; break;
#endif
#if defined(B3500000)
case 3500000: tspeed=B3500000; break;
#endif
#if defined(B4000000)
case 4000000: tspeed=B4000000; break;
#endif
default: WriteError("requested invalid speed %d",speed);
tspeed=0; break;
}
return tspeed;
}
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