/***************************************************************************** * * $Id: openport.c,v 1.16 2007/02/11 14:52:48 mbse Exp $ * ***************************************************************************** * Copyright (C) 1997-2007 * * 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/mbselib.h" #include "ttyio.h" #include "openport.h" #include "zmmisc.h" #ifdef USE_SGTTY # ifdef LLITOUT int Locmode; /* Saved "local mode" for 4.x BSD "new driver" */ int Locbit = LLITOUT; /* Bit SUPPOSED to disable output translations */ # endif #endif #ifdef USE_TERMIOS struct termios oldtty, tty; #else # if defined(USE_TERMIO) struct termio oldtty, tty; # else struct sgttyb oldtty, tty; struct tchars oldtch, tch; # endif #endif int hanged_up = 0; unsigned Baudrate = 9600; /* Default, set by first io_mode() call */ static struct { unsigned baudr; speed_t speedcode; } speeds[] = { {110, B110}, {300, B300}, {600, B600}, {1200, B1200}, {2400, B2400}, {4800, B4800}, {9600, B9600}, #ifdef B12000 {12000, B12000}, #endif #ifdef B14400 {14400, B14400}, #endif #ifdef B19200 {19200, B19200}, #endif #ifdef B38400 {38400, B38400}, #endif #ifdef B57600 {57600, B57600}, #endif #ifdef B115200 {115200, B115200}, #endif #ifdef B230400 {230400, B230400}, #endif #ifdef B460800 {460800, B460800}, #endif #ifdef B500000 {500000, B500000}, #endif #ifdef EXTA {19200, EXTA}, #endif #ifdef EXTB {38400, EXTB}, #endif {0, 0} }; unsigned getspeed(speed_t); unsigned getspeed(speed_t code) { int n; for (n = 0; speeds[n].baudr; ++n) if (speeds[n].speedcode == code) return speeds[n].baudr; return 38400; /* Assume fifo if ioctl failed */ } /* * Set port to local, hangup using DTR drop. */ void hangup(void) { struct termios Tios; tcflag_t cflag; speed_t ispeed, ospeed; int rc; Syslog('t', "hangup()"); if (isatty(0)) { if ((rc = tcgetattr(0,&Tios))) { WriteError("$tcgetattr(0,save) return %d",rc); return; } Syslog('+', "Lowering DTR to hangup"); cflag = Tios.c_cflag | CLOCAL; ispeed = cfgetispeed(&tty); ospeed = cfgetospeed(&tty); cfsetispeed(&Tios,0); cfsetospeed(&Tios,0); if ((rc = tcsetattr(0,TCSADRAIN,&Tios))) WriteError("$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); } else { Syslog('t', "Not at a tty"); } return; } /* * mode(n) * 3: save old tty stat, set raw mode with flow control * 2: set XON/XOFF for sb/sz with ZMODEM or YMODEM-g * 1: save old tty stat, set raw mode * 0: restore original tty mode */ char *io_names[] = { (char *)"restore-tty", (char *)"save-tty set-raw", (char *)"set-Xon/Xoff", (char *)"save-tty set-raw-flow" }; int io_mode(int fd, int n) { static int did0 = FALSE; Syslog('t', "io_mode(%d, %d) (%s)", fd, n, io_names[n]); switch(n) { #ifdef USE_TERMIOS case 2: if (!did0) { tcgetattr(fd,&oldtty); } tty = oldtty; tty.c_iflag = BRKINT | IXON; tty.c_oflag = 0; /* Transparent output */ tty.c_cflag &= ~( CSIZE | PARENB ); /* Disable parity and all character sizes */ tty.c_cflag |= CS8 | CREAD; tty.c_lflag = (protocol == ZM_ZMODEM) ? 0 : ISIG; tty.c_cc[VINTR] = (protocol == ZM_ZMODEM) ? -1:030; /* Interrupt char */ tty.c_cc[VQUIT] = -1; /* Quit char */ tty.c_cc[VMIN] = 3; /* This many chars satisfies reads */ tty.c_cc[VTIME] = 1; tcsetattr(fd,TCSADRAIN,&tty); did0 = TRUE; Baudrate = getspeed(cfgetospeed(&tty)); Syslog('t', "Baudrate = %d", Baudrate); return 0; case 1: case 3: if (!did0) { tcgetattr(fd,&oldtty); } tty = oldtty; tty.c_iflag = n==3 ? (IXON|IXOFF) : IXOFF; /* * Setup raw mode: no echo, noncanonical (no edit chars), * no signal generating chars, and no extended chars (^V, * ^O, ^R, ^W). */ tty.c_lflag &= ~(ECHO | ICANON | ISIG | IEXTEN); tty.c_oflag = 0; /* Transparent output */ tty.c_cflag &= ~( CSIZE | PARENB ); /* Same baud rate, disable parity */ tty.c_cflag |= CS8; tty.c_cc[VMIN] = 2; /* This many chars satisfies reads */ tty.c_cc[VTIME] = 1; tcsetattr(fd,TCSADRAIN,&tty); Baudrate = getspeed(cfgetospeed(&tty)); did0 = TRUE; return 0; case 0: if (!did0) return -1; tcdrain (fd); /* wait until everything is sent */ tcflush (fd,TCIOFLUSH); /* flush input queue */ tcsetattr (fd,TCSADRAIN,&oldtty); /* Restore */ tcflow (fd,TCOON); /* restart output */ return 0; #endif #ifdef USE_TERMIO #error USE_TERMIO driver not coded #endif #ifdef USE_SGTTY #error USE_SGTTY driver not coded #endif } return -1; } int rawport(void) { Syslog('t', "rawport()"); return io_mode(0, 1); } int cookedport(void) { Syslog('t', "cookedport()"); return io_mode(0, 0); } void sendbrk(void) { Syslog('t', "Send break"); if (isatty(0)) { #ifdef USE_TERMIOS tcsendbreak(0, 0); #endif #ifdef USE_TERMIO ioctl(0, TCSBRK, 0); #endif #ifdef USE_SGTTY #ifdef TIOCSBRK sleep(1); ioctl(0, TIOCSBRK, 0); sleep(1); ioctl(0, TIOCCBRK, 0); #endif #endif } }