bin/stty/key.c

   1 /*-
   2  * Copyright (c) 1991, 1993, 1994
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)key.c    8.3 (Berkeley) 4/2/94
  30  * $FreeBSD: src/bin/stty/key.c,v 1.11.2.2 2001/10/15 13:45:05 dd Exp $
  31  * $DragonFly: src/bin/stty/key.c,v 1.5 2004/11/07 20:54:52 eirikn Exp $
  32  */
  33
  34 #include <sys/types.h>
  35
  36 #include <err.h>
  37 #include <errno.h>
  38 #include <stdlib.h>
  39 #include <stdio.h>
  40 #include <string.h>
  41
  42 #include "stty.h"
  43 #include "extern.h"
  44
  45 __BEGIN_DECLS
  46 static int c_key (const void *, const void *);
  47 void    f_all (struct info *);
  48 void    f_cbreak (struct info *);
  49 void    f_columns (struct info *);
  50 void    f_dec (struct info *);
  51 void    f_ek (struct info *);
  52 void    f_everything (struct info *);
  53 void    f_extproc (struct info *);
  54 void    f_ispeed (struct info *);
  55 void    f_nl (struct info *);
  56 void    f_ospeed (struct info *);
  57 void    f_raw (struct info *);
  58 void    f_rows (struct info *);
  59 void    f_sane (struct info *);
  60 void    f_size (struct info *);
  61 void    f_speed (struct info *);
  62 void    f_tty (struct info *);
  63 __END_DECLS
  64
  65 static struct key {
  66         const char *name;                       /* name */
  67         void (*f) (struct info *);              /* function */
  68 #define F_NEEDARG       0x01                    /* needs an argument */
  69 #define F_OFFOK         0x02                    /* can turn off */
  70         int flags;
  71 } keys[] = {
  72         { "all",        f_all,          0 },
  73         { "cbreak",     f_cbreak,       F_OFFOK },
  74         { "cols",       f_columns,      F_NEEDARG },
  75         { "columns",    f_columns,      F_NEEDARG },
  76         { "cooked",     f_sane,         0 },
  77         { "dec",        f_dec,          0 },
  78         { "ek",         f_ek,           0 },
  79         { "everything", f_everything,   0 },
  80         { "extproc",    f_extproc,      F_OFFOK },
  81         { "ispeed",     f_ispeed,       F_NEEDARG },
  82         { "new",        f_tty,          0 },
  83         { "nl",         f_nl,           F_OFFOK },
  84         { "old",        f_tty,          0 },
  85         { "ospeed",     f_ospeed,       F_NEEDARG },
  86         { "raw",        f_raw,          F_OFFOK },
  87         { "rows",       f_rows,         F_NEEDARG },
  88         { "sane",       f_sane,         0 },
  89         { "size",       f_size,         0 },
  90         { "speed",      f_speed,        0 },
  91         { "tty",        f_tty,          0 },
  92 };
  93
  94 static int
  95 c_key(const void *a, const void *b)
  96 {
  97
  98         return (strcmp(((const struct key *)a)->name, ((const struct key *)b)->name));
  99 }
 100
 101 int
 102 ksearch(char ***argvp, struct info *ip)
 103 {
 104         char *name;
 105         struct key *kp, tmp;
 106
 107         name = **argvp;
 108         if (*name == '-') {
 109                 ip->off = 1;
 110                 ++name;
 111         } else
 112                 ip->off = 0;
 113
 114         tmp.name = name;
 115         if (!(kp = (struct key *)bsearch(&tmp, keys,
 116             sizeof(keys)/sizeof(struct key), sizeof(struct key), c_key)))
 117                 return (0);
 118         if (!(kp->flags & F_OFFOK) && ip->off) {
 119                 warnx("illegal option -- -%s", name);
 120                 usage();
 121         }
 122         if (kp->flags & F_NEEDARG && !(ip->arg = *++*argvp)) {
 123                 warnx("option requires an argument -- %s", name);
 124                 usage();
 125         }
 126         kp->f(ip);
 127         return (1);
 128 }
 129
 130 void
 131 f_all(struct info *ip)
 132 {
 133         print(&ip->t, &ip->win, ip->ldisc, BSD);
 134 }
 135
 136 void
 137 f_cbreak(struct info *ip)
 138 {
 139
 140         if (ip->off)
 141                 f_sane(ip);
 142         else {
 143                 ip->t.c_iflag |= BRKINT|IXON|IMAXBEL;
 144                 ip->t.c_oflag |= OPOST;
 145                 ip->t.c_lflag |= ISIG|IEXTEN;
 146                 ip->t.c_lflag &= ~ICANON;
 147                 ip->set = 1;
 148         }
 149 }
 150
 151 void
 152 f_columns(struct info *ip)
 153 {
 154
 155         ip->win.ws_col = atoi(ip->arg);
 156         ip->wset = 1;
 157 }
 158
 159 void
 160 f_dec(struct info *ip)
 161 {
 162
 163         ip->t.c_cc[VERASE] = (u_char)0177;
 164         ip->t.c_cc[VKILL] = CTRL('u');
 165         ip->t.c_cc[VINTR] = CTRL('c');
 166         ip->t.c_lflag &= ~ECHOPRT;
 167         ip->t.c_lflag |= ECHOE|ECHOKE|ECHOCTL;
 168         ip->t.c_iflag &= ~IXANY;
 169         ip->set = 1;
 170 }
 171
 172 void
 173 f_ek(struct info *ip)
 174 {
 175
 176         ip->t.c_cc[VERASE] = CERASE;
 177         ip->t.c_cc[VKILL] = CKILL;
 178         ip->set = 1;
 179 }
 180
 181 void
 182 f_everything(struct info *ip)
 183 {
 184
 185         print(&ip->t, &ip->win, ip->ldisc, BSD);
 186 }
 187
 188 void
 189 f_extproc(struct info *ip)
 190 {
 191
 192         if (ip->off) {
 193                 int tmp = 0;
 194                 ioctl(ip->fd, TIOCEXT, &tmp);
 195         } else {
 196                 int tmp = 1;
 197                 ioctl(ip->fd, TIOCEXT, &tmp);
 198         }
 199 }
 200
 201 void
 202 f_ispeed(struct info *ip)
 203 {
 204
 205         cfsetispeed(&ip->t, (speed_t)atoi(ip->arg));
 206         ip->set = 1;
 207 }
 208
 209 void
 210 f_nl(struct info *ip)
 211 {
 212
 213         if (ip->off) {
 214                 ip->t.c_iflag |= ICRNL;
 215                 ip->t.c_oflag |= ONLCR;
 216         } else {
 217                 ip->t.c_iflag &= ~ICRNL;
 218                 ip->t.c_oflag &= ~ONLCR;
 219         }
 220         ip->set = 1;
 221 }
 222
 223 void
 224 f_ospeed(struct info *ip)
 225 {
 226
 227         cfsetospeed(&ip->t, (speed_t)atoi(ip->arg));
 228         ip->set = 1;
 229 }
 230
 231 void
 232 f_raw(struct info *ip)
 233 {
 234
 235         if (ip->off)
 236                 f_sane(ip);
 237         else {
 238                 cfmakeraw(&ip->t);
 239                 ip->t.c_cflag &= ~(CSIZE|PARENB);
 240                 ip->t.c_cflag |= CS8;
 241                 ip->set = 1;
 242         }
 243 }
 244
 245 void
 246 f_rows(struct info *ip)
 247 {
 248
 249         ip->win.ws_row = atoi(ip->arg);
 250         ip->wset = 1;
 251 }
 252
 253 void
 254 f_sane(struct info *ip)
 255 {
 256
 257         ip->t.c_cflag = TTYDEF_CFLAG | (ip->t.c_cflag & CLOCAL);
 258         ip->t.c_iflag = TTYDEF_IFLAG;
 259         ip->t.c_iflag |= ICRNL;
 260         /* preserve user-preference flags in lflag */
 261 #define LKEEP   (ECHOKE|ECHOE|ECHOK|ECHOPRT|ECHOCTL|ALTWERASE|TOSTOP|NOFLSH)
 262         ip->t.c_lflag = TTYDEF_LFLAG | (ip->t.c_lflag & LKEEP);
 263         ip->t.c_oflag = TTYDEF_OFLAG;
 264         ip->set = 1;
 265 }
 266
 267 void
 268 f_size(struct info *ip)
 269 {
 270
 271         printf("%d %d\n", ip->win.ws_row, ip->win.ws_col);
 272 }
 273
 274 void
 275 f_speed(struct info *ip)
 276 {
 277
 278         printf("%lu\n", (u_long)cfgetospeed(&ip->t));
 279 }
 280
 281 void
 282 f_tty(struct info *ip)
 283 {
 284         int tmp;
 285
 286         tmp = TTYDISC;
 287         if (ioctl(ip->fd, TIOCSETD, &tmp) < 0)
 288                 err(1, "TIOCSETD");
 289 }