332 lines
7.0 KiB
C
332 lines
7.0 KiB
C
/* $NetBSD: key.c,v 1.21 2013/09/12 19:47:23 christos Exp $ */
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/*-
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* Copyright (c) 1991, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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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. 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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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)key.c 8.4 (Berkeley) 2/20/95";
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#else
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__RCSID("$NetBSD: key.c,v 1.21 2013/09/12 19:47:23 christos Exp $");
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#endif
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#endif /* not lint */
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#include <sys/types.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <paths.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "stty.h"
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#include "extern.h"
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__BEGIN_DECLS
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void f_all(struct info *);
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void f_cbreak(struct info *);
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void f_columns(struct info *);
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void f_dec(struct info *);
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void f_everything(struct info *);
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void f_extproc(struct info *);
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void f_insane(struct info *);
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void f_ispeed(struct info *);
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void f_nl(struct info *);
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void f_ospeed(struct info *);
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void f_raw(struct info *);
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void f_rows(struct info *);
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void f_sane(struct info *);
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void f_size(struct info *);
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void f_speed(struct info *);
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void f_ostart(struct info *);
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void f_ostop(struct info *);
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void f_tty(struct info *);
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__END_DECLS
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static const struct key {
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const char *name; /* name */
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void (*f)(struct info *); /* function */
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#define F_NEEDARG 0x01 /* needs an argument */
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#define F_OFFOK 0x02 /* can turn off */
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int flags;
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} keys[] = {
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{ "all", f_all, 0 },
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{ "cbreak", f_cbreak, F_OFFOK },
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{ "cols", f_columns, F_NEEDARG },
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{ "columns", f_columns, F_NEEDARG },
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{ "cooked", f_sane, 0 },
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{ "dec", f_dec, 0 },
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{ "everything", f_everything, 0 },
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{ "extproc", f_extproc, F_OFFOK },
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{ "insane", f_insane, 0 },
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{ "ispeed", f_ispeed, F_NEEDARG },
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{ "new", f_tty, 0 },
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{ "nl", f_nl, F_OFFOK },
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{ "old", f_tty, 0 },
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{ "ospeed", f_ospeed, F_NEEDARG },
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{ "ostart", f_ostart, 0 },
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{ "ostop", f_ostop, 0 },
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{ "raw", f_raw, F_OFFOK },
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{ "rows", f_rows, F_NEEDARG },
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{ "sane", f_sane, 0 },
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{ "size", f_size, 0 },
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{ "speed", f_speed, 0 },
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{ "tty", f_tty, 0 },
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};
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static int c_key(const void *, const void *);
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static int
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c_key(const void *a, const void *b)
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{
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return (strcmp(((const struct key *)a)->name,
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((const struct key *)b)->name));
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}
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int
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ksearch(char ***argvp, struct info *ip)
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{
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char *name;
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struct key *kp, tmp;
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name = **argvp;
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if (*name == '-') {
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ip->off = 1;
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++name;
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} else
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ip->off = 0;
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tmp.name = name;
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if (!(kp = (struct key *)bsearch(&tmp, keys,
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sizeof(keys)/sizeof(struct key), sizeof(struct key), c_key)))
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return (0);
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if (!(kp->flags & F_OFFOK) && ip->off) {
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warnx("illegal option -- %s", name);
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usage();
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}
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if (kp->flags & F_NEEDARG && !(ip->arg = *++*argvp)) {
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warnx("option requires an argument -- %s", name);
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usage();
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}
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kp->f(ip);
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return (1);
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}
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void
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f_all(struct info *ip)
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{
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print(&ip->t, &ip->win, ip->queue, ip->ldisc, STTY_BSD);
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}
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void
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f_cbreak(struct info *ip)
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{
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if (ip->off)
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f_sane(ip);
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else {
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ip->t.c_iflag |= BRKINT|IXON|IMAXBEL;
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ip->t.c_oflag |= OPOST;
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ip->t.c_lflag |= ISIG|IEXTEN;
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ip->t.c_lflag &= ~ICANON;
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ip->set = 1;
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}
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}
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void
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f_columns(struct info *ip)
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{
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ip->win.ws_col = atoi(ip->arg);
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ip->wset = 1;
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}
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void
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f_dec(struct info *ip)
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{
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ip->t.c_cc[VERASE] = (u_char)0177;
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ip->t.c_cc[VKILL] = CTRL('u');
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ip->t.c_cc[VINTR] = CTRL('c');
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ip->t.c_lflag &= ~ECHOPRT;
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ip->t.c_lflag |= ECHOE|ECHOKE|ECHOCTL;
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ip->t.c_iflag &= ~IXANY;
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ip->set = 1;
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}
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void
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f_everything(struct info *ip)
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{
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print(&ip->t, &ip->win, ip->queue, ip->ldisc, STTY_BSD);
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}
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void
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f_extproc(struct info *ip)
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{
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#ifdef TIOCEXT
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if (ip->off) {
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int tmp = 0;
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(void)ioctl(ip->fd, TIOCEXT, &tmp);
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} else {
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int tmp = 1;
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(void)ioctl(ip->fd, TIOCEXT, &tmp);
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}
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ip->set = 1;
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#endif
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}
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void
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f_insane(struct info *ip)
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{
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int f, r;
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r = f = open(_PATH_URANDOM, O_RDONLY, 0);
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if (f >= 0) {
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r = read(f, &(ip->t), sizeof(struct termios));
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close(f);
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}
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if (r < 0) {
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/* XXX not cryptographically secure! */
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srandom(time(NULL));
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ip->t.c_iflag = random();
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ip->t.c_oflag = random();
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ip->t.c_cflag = random();
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ip->t.c_lflag = random();
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for (f = 0; f < NCCS; f++) {
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ip->t.c_cc[f] = random() & 0xFF;
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}
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ip->t.c_ispeed = random();
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ip->t.c_ospeed = random();
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}
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ip->set = 1;
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}
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void
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f_ispeed(struct info *ip)
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{
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cfsetispeed(&ip->t, atoi(ip->arg));
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ip->set = 1;
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}
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void
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f_nl(struct info *ip)
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{
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if (ip->off) {
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ip->t.c_iflag |= ICRNL;
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ip->t.c_oflag |= ONLCR;
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} else {
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ip->t.c_iflag &= ~ICRNL;
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ip->t.c_oflag &= ~ONLCR;
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}
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ip->set = 1;
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}
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void
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f_ospeed(struct info *ip)
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{
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cfsetospeed(&ip->t, atoi(ip->arg));
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ip->set = 1;
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}
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void
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f_raw(struct info *ip)
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{
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if (ip->off)
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f_sane(ip);
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else {
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cfmakeraw(&ip->t);
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ip->t.c_cflag &= ~(CSIZE|PARENB);
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ip->t.c_cflag |= CS8;
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ip->set = 1;
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}
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}
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void
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f_rows(struct info *ip)
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{
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ip->win.ws_row = atoi(ip->arg);
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ip->wset = 1;
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}
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void
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f_sane(struct info *ip)
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{
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ip->t.c_cflag = TTYDEF_CFLAG | (ip->t.c_cflag & (CLOCAL|CRTSCTS|CDTRCTS));
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ip->t.c_iflag = TTYDEF_IFLAG;
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ip->t.c_iflag |= ICRNL;
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/* preserve user-preference flags in lflag */
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#define LKEEP (ECHOKE|ECHOE|ECHOK|ECHOPRT|ECHOCTL|ALTWERASE|TOSTOP|NOFLSH)
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ip->t.c_lflag = TTYDEF_LFLAG | (ip->t.c_lflag & LKEEP);
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ip->t.c_oflag = TTYDEF_OFLAG;
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ip->set = 1;
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}
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void
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f_size(struct info *ip)
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{
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(void)printf("%d %d\n", ip->win.ws_row, ip->win.ws_col);
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}
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void
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f_speed(struct info *ip)
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{
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(void)printf("%d\n", cfgetospeed(&ip->t));
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}
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/* ARGSUSED */
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void
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f_tty(struct info *ip)
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{
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#ifdef TTYDISC
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int tmp;
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tmp = TTYDISC;
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if (ioctl(0, TIOCSETD, &tmp) < 0)
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err(1, "TIOCSETD");
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#endif
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}
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void
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f_ostart(struct info *ip)
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{
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if (ioctl (0, TIOCSTART) < 0)
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err(1, "TIOCSTART");
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}
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void
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f_ostop(struct info *ip)
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{
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if (ioctl (0, TIOCSTOP) < 0)
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err(1, "TIOCSTOP");
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}
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