Return to cu.c CVS log

Up to [local] / src / usr.bin / tip

Don't hard-code a list of allowed baud rates.  Instead, accept
anything but check the return value of tcsetattr() and error out
if it fails.  This way we accept any baud rate the serial driver
will support.  mickey@ OK

/*	$OpenBSD: cu.c,v 1.13 2002/05/29 22:58:56 millert Exp $	*/
/*	$NetBSD: cu.c,v 1.5 1997/02/11 09:24:05 mrg Exp $	*/

/*
 * Copyright (c) 1983, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the 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 REGENTS 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 REGENTS 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.
 */

#ifndef lint
#if 0
static char sccsid[] = "@(#)cu.c	8.1 (Berkeley) 6/6/93";
#endif
static const char rcsid[] = "$OpenBSD: cu.c,v 1.13 2002/05/29 22:58:56 millert Exp $";
#endif /* not lint */

#include "tip.h"

void	cleanup();
void	cuusage();

/*
 * Botch the interface to look like cu's
 */
void
cumain(argc, argv)
	int argc;
	char *argv[];
{
	int ch, i, parity;
	long l;
	char *cp;
	static char sbuf[12];

	if (argc < 2)
		cuusage();
	CU = DV = NOSTR;
	BR = DEFBR;
	parity = 0;	/* none */
	while ((ch = getopt(argc, argv, "a:l:s:htoe0123456789")) != -1) {
		switch(ch) {
		case 'a':
			CU = optarg;
			break;
		case 'l':
			if (DV != NULL) {
				fprintf(stderr,
				    "%s: cannot specificy multiple -l options\n",
				    __progname);
				exit(3);
			}
			if (strchr(optarg, '/'))
				DV = optarg;
			else
				asprintf(&DV, "/dev/%s", optarg);
			break;
		case 's':
			l = strtol(optarg, &cp, 10);
			if (*cp != '\0' || l < 0 || l >= INT_MAX) {
				fprintf(stderr, "%s: unsupported speed %s\n",
				    __progname, optarg);
				exit(3);
			}
			BR = (int)l;
			break;
		case 'h':
			setboolean(value(LECHO), TRUE);
			HD = TRUE;
			break;
		case 't':
			HW = 1, DU = -1;
			break;
		case 'o':
			if (parity != 0)
				parity = 0;	/* -e -o */
			else
				parity = 1;	/* odd */
			break;
		case 'e':
			if (parity != 0)
				parity = 0;	/* -o -e */
			else
				parity = -1;	/* even */
			break;
		case '0': case '1': case '2': case '3': case '4':
		case '5': case '6': case '7': case '8': case '9':
			if (CU)
				CU[strlen(CU)-1] = ch;
			if (DV)
				DV[strlen(DV)-1] = ch;
			break;
		default:
			cuusage();
			break;
		}
	}
	argc -= optind;
	argv += optind;

	switch (argc) {
	case 1:
		PN = argv[0];
		break;
	case 0:
		break;
	default:
		cuusage();
		break;
	}

	signal(SIGINT, cleanup);
	signal(SIGQUIT, cleanup);
	signal(SIGHUP, cleanup);
	signal(SIGTERM, cleanup);

	/*
	 * The "cu" host name is used to define the
	 * attributes of the generic dialer.
	 */
	(void)snprintf(sbuf, sizeof(sbuf), "cu%ld", BR);
	if ((i = hunt(sbuf)) == 0) {
		printf("all ports busy\n");
		exit(3);
	}
	if (i == -1) {
		printf("link down\n");
		(void)uu_unlock(uucplock);
		exit(3);
	}
	setbuf(stdout, NULL);
	loginit();
	user_uid();
	vinit();
	switch (parity) {
	case -1:
		setparity("even");
		break;
	case 1:
		setparity("odd");
		break;
	default:
		setparity("none");
		break;
	}
	setboolean(value(VERBOSE), FALSE);
	if (HW && ttysetup(BR)) {
		fprintf(stderr, "%s: unsupported speed %ld\n",
		    __progname, BR);
		daemon_uid();
		(void)uu_unlock(uucplock);
		exit(3);
	}
	if (connect()) {
		printf("Connect failed\n");
		daemon_uid();
		(void)uu_unlock(uucplock);
		exit(1);
	}
	if (!HW && ttysetup(BR)) {
		fprintf(stderr, "%s: unsupported speed %ld\n",
		    __progname, BR);
		daemon_uid();
		(void)uu_unlock(uucplock);
		exit(3);
	}
}

void
cuusage()
{
	fprintf(stderr, "usage: cu [-ehot] [-a acu] [-l line] [-s speed] [-#] "
	    "[phone-number]\n");
	exit(8);
}