270 lines
6.2 KiB
C
270 lines
6.2 KiB
C
/*
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* Copyright (c) 1988 Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Adams.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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** Hacks to support "-a|c|n" flags on the command line which enalbe VJ
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** header compresion and disable ICMP. I use getopt to deal witht that
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** stuff because I'm a lazy sob, I can't spell, and that's OK.
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**
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** If this is good all rights go to B & L Jolitz, otherwise send your
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** comments to Reagan (/dev/null).
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**
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** nerd@percival.rain.com (Michael Galassi) 92.09.03
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**
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** Hacked to change from sgtty to POSIX termio style serial line control
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** and added flag to enable cts/rts style flow control.
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**
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** blymn@awadi.com.au (Brett Lymn) 93.04.04
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*/
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#ifndef lint
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char copyright[] =
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"@(#) Copyright (c) 1988 Regents of the University of California.\n\
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All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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/*static char sccsid[] = "from: @(#)slattach.c 4.6 (Berkeley) 6/1/90";*/
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static char rcsid[] = "$Id: slattach.c,v 1.7 1993/08/01 18:23:56 mycroft Exp $";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <termios.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <net/if.h>
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#include <net/if_slvar.h>
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#include <netdb.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <paths.h>
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#define DEFAULT_BAUD 9600
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static char usage_str[] = "\
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usage: %s [-a ][-c ][-n ][-s <speed> ]<device>\n\
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-a -- autoenable VJ compression\n\
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-c -- enable VJ compression\n\
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-n -- throw out ICMP packets\n\
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-h -- turn on cts/rts style flow control\n\
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-s -- baud rate (default 9600)\n";
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int main(int argc, char **argv)
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{
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struct termios tty;
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int option;
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int fd;
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char devname[32];
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char *dev = (char *)0;
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int slipdisc = SLIPDISC;
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int speed = DEFAULT_BAUD;
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int slflags = 0;
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int flow_control = 0; /* extra flags to enable hardware flow cont. */
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extern char *optarg;
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extern int optind;
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while ((option = getopt(argc, argv, "achns:")) != EOF) {
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switch (option) {
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case 'a':
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slflags |= SC_AUTOCOMP;
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slflags &= ~SC_COMPRESS;
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break;
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case 'c':
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slflags |= SC_COMPRESS;
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slflags &= ~SC_AUTOCOMP;
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break;
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case 'h':
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flow_control |= CRTSCTS;
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break;
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case 'n':
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slflags |= SC_NOICMP;
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break;
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case 's':
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speed = atoi(optarg);
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break;
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case '?':
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default:
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fprintf(stderr, usage_str, argv[0]);
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exit(1);
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}
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}
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if (optind == argc - 1)
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dev = argv[optind];
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if (dev == (char *)0) {
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fprintf(stderr, usage_str, argv[0]);
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exit(2);
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}
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if ((speed = findspeed(speed)) == 0) {
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fprintf(stderr, "unknown speed");
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exit(1);
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}
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if (strncmp(_PATH_DEV, dev, sizeof(_PATH_DEV) - 1)) {
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strcpy(devname, _PATH_DEV);
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strcat(devname, "/");
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strncat(devname, dev, 10);
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dev = devname;
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}
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if ((fd = open(dev, O_RDWR | O_NDELAY)) < 0) {
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perror(dev);
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exit(1);
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}
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tty.c_iflag = 0;
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tty.c_oflag = 0;
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tty.c_cflag = CREAD | CS8 | flow_control;
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tty.c_lflag = 0;
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tty.c_cc[VMIN] = 1; /* wait for one char */
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tty.c_cc[VTIME] = 0; /* wait forever for a char */
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if (ioctl(fd, TIOCSETA, &tty) < 0) {
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perror("ioctl(TIOCSETA)");
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close(fd);
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exit(1);
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}
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if (ioctl(fd, TIOCSDTR) < 0) {
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perror("ioctl(TIOCSDTR)");
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close(fd);
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exit(1);
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}
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cfsetispeed(&tty, speed);
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cfsetospeed(&tty, speed);
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if (tcsetattr(fd, TCSADRAIN, &tty) < 0) {
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perror("tcsetattr");
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close(fd);
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exit(1);
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}
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if (ioctl(fd, TIOCSETD, &slipdisc) < 0) {
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perror("ioctl(TIOCSETD)");
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close(fd);
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exit(1);
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}
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if (ioctl(fd, SLIOCSFLAGS, &slflags) < 0) {
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perror("ioctl(SLIOCSFLAGS)");
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close(fd);
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exit(1);
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}
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if (fork() > 0)
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exit(0);
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for (;;)
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sigpause(0L);
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}
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struct sg_spds {
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int sp_val, sp_name;
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} spds[] = {
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#ifdef B50
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{ 50, B50 },
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#endif
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#ifdef B75
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{ 75, B75 },
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#endif
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#ifdef B110
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{ 110, B110 },
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#endif
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#ifdef B150
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{ 150, B150 },
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#endif
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#ifdef B200
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{ 200, B200 },
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#endif
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#ifdef B300
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{ 300, B300 },
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#endif
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#ifdef B600
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{ 600, B600 },
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#endif
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#ifdef B1200
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{ 1200, B1200 },
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#endif
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#ifdef B1800
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{ 1800, B1800 },
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#endif
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#ifdef B2000
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{ 2000, B2000 },
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#endif
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#ifdef B2400
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{ 2400, B2400 },
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#endif
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#ifdef B3600
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{ 3600, B3600 },
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#endif
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#ifdef B4800
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{ 4800, B4800 },
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#endif
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#ifdef B7200
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{ 7200, B7200 },
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#endif
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#ifdef B9600
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{ 9600, B9600 },
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#endif
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#ifdef B19200
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{ 19200, B19200 },
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#endif
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#ifdef B38400
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{ 38400, B38400 },
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#endif
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#ifdef B57600
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{ 57600, B57600 },
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#endif
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#ifdef B115200
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{ 115200, B115200 },
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#endif
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{ 0, 0 }
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};
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int findspeed(int speed)
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{
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struct sg_spds *sp = spds;
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while ((sp->sp_val != 0) && (sp->sp_val != speed))
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sp++;
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return (sp->sp_name);
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}
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