* Copyright (c) 1991, 1993, 1994

/* $NetBSD: key.c,v 1.7 2005/11/28 03:26:06 christos Exp $ */

/*-
* Copyright (c) 1991, 1993, 1994
* 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. 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.
*/

#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)key.c 8.3 (Berkeley) 4/2/94";
#else
__RCSID("$NetBSD: key.c,v 1.7 2005/11/28 03:26:06 christos Exp $");
#endif
#endif /* not lint */

#include <sys/param.h>
#include <sys/types.h>

#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <syslog.h>
#include <dirent.h>
#include <termios.h>

#include "lp.h"
#include "extern.h"

__BEGIN_DECLS
static int
c_key(const void *, const void *);
void f_cbreak(struct info *);
void f_columns(struct info *);
void f_dec(struct info *);
void f_extproc(struct info *);
void f_ispeed(struct info *);
void f_nl(struct info *);
void f_ospeed(struct info *);
void f_raw(struct info *);
void f_rows(struct info *);
void f_sane(struct info *);
void f_tty(struct info *);
__END_DECLS

static struct key {
const char *name; /* name */
void (*f)(struct info *); /* function */
#define F_NEEDARG 0x01 /* needs an argument */
#define F_OFFOK 0x02 /* can turn off */
int flags;
} const keys[] = {
{ "cbreak", f_cbreak, F_OFFOK },
{ "cols", f_columns, F_NEEDARG },
{ "columns", f_columns, F_NEEDARG },
{ "cooked", f_sane, 0 },
{ "dec", f_dec, 0 },
{ "extproc", f_extproc, F_OFFOK },
{ "ispeed", f_ispeed, F_NEEDARG },
{ "new", f_tty, 0 },
{ "nl", f_nl, F_OFFOK },
{ "old", f_tty, 0 },
{ "ospeed", f_ospeed, F_NEEDARG },
{ "raw", f_raw, F_OFFOK },
{ "rows", f_rows, F_NEEDARG },
{ "sane", f_sane, 0 },
{ "tty", f_tty, 0 },
};

static int
c_key(const void *a, const void *b)
{

return (strcmp(((const struct key *)a)->name,
((const struct key *)b)->name));
}

int
ksearch(char ***argvp, struct info *ip)
{
char *name;
struct key *kp, tmp;

name = **argvp;
if (*name == '-') {
ip->off = 1;
++name;
} else
ip->off = 0;

tmp.name = name;
if (!(kp = (struct key *)bsearch(&tmp, keys,
sizeof(keys)/sizeof(struct key), sizeof(struct key), c_key)))
return (0);
if (!(kp->flags & F_OFFOK) && ip->off) {
syslog(LOG_INFO, "%s: illegal option: %s", printer, name);
return (1);
}
if (kp->flags & F_NEEDARG && !(ip->arg = *++*argvp)) {
syslog(LOG_INFO, "%s: option requires an argument: %s",
printer, name);
return (1);
}
kp->f(ip);
return (1);
}

void
f_cbreak(struct info *ip)
{

if (ip->off)
f_sane(ip);
else {
ip->t.c_iflag |= BRKINT|IXON|IMAXBEL;
ip->t.c_oflag |= OPOST;
ip->t.c_lflag |= ISIG|IEXTEN;
ip->t.c_lflag &= ~ICANON;
ip->set = 1;
}
}

void
f_columns(struct info *ip)
{

ip->win.ws_col = atoi(ip->arg);
ip->wset = 1;
}

void
f_dec(struct info *ip)
{

ip->t.c_cc[VERASE] = (u_char)0177;
ip->t.c_cc[VKILL] = CTRL('u');
ip->t.c_cc[VINTR] = CTRL('c');
ip->t.c_lflag &= ~ECHOPRT;
ip->t.c_lflag |= ECHOE|ECHOKE|ECHOCTL;
ip->t.c_iflag &= ~IXANY;
ip->set = 1;
}

void
f_extproc(struct info *ip)
{

if (ip->set) {
int tmp = 1;
(void)ioctl(ip->fd, TIOCEXT, &tmp);
} else {
int tmp = 0;
(void)ioctl(ip->fd, TIOCEXT, &tmp);
}
}

void
f_ispeed(struct info *ip)
{

cfsetispeed(&ip->t, atoi(ip->arg));
ip->set = 1;
}

void
f_nl(struct info *ip)
{

if (ip->off) {
ip->t.c_iflag |= ICRNL;
ip->t.c_oflag |= ONLCR;
} else {
ip->t.c_iflag &= ~ICRNL;
ip->t.c_oflag &= ~ONLCR;
}
ip->set = 1;
}

void
f_ospeed(struct info *ip)
{

cfsetospeed(&ip->t, atoi(ip->arg));
ip->set = 1;
}

void
f_raw(struct info *ip)
{

if (ip->off)
f_sane(ip);
else {
cfmakeraw(&ip->t);
ip->t.c_cflag &= ~(CSIZE|PARENB);
ip->t.c_cflag |= CS8;
ip->set = 1;
}
}

void
f_rows(struct info *ip)
{

ip->win.ws_row = atoi(ip->arg);
ip->wset = 1;
}

void
f_sane(struct info *ip)
{

ip->t.c_cflag = TTYDEF_CFLAG | (ip->t.c_cflag & (CLOCAL|CRTSCTS|CDTRCTS));
ip->t.c_iflag = TTYDEF_IFLAG;
ip->t.c_iflag |= ICRNL;
/* preserve user-preference flags in lflag */
#define LKEEP (ECHOKE|ECHOE|ECHOK|ECHOPRT|ECHOCTL|ALTWERASE|TOSTOP|NOFLSH)
ip->t.c_lflag = TTYDEF_LFLAG | (ip->t.c_lflag & LKEEP);
ip->t.c_oflag = TTYDEF_OFLAG;
ip->set = 1;
}

void
f_tty(struct info *ip)
{
int tmp;

tmp = TTYDISC;
if (ioctl(0, TIOCSETD, &tmp) < 0)
syslog(LOG_ERR, "%s: ioctl(TIOCSETD): %m", printer);
}