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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#)key.c    8.3 (Berkeley) 4/2/94
  34  * $FreeBSD: src/bin/stty/key.c,v 1.11.2.2 2001/10/15 13:45:05 dd Exp $
  35  * $DragonFly: src/bin/stty/key.c,v 1.5 2004/11/07 20:54:52 eirikn Exp $
  36  */
  37
  38 #include <sys/types.h>
  39
  40 #include <err.h>
  41 #include <errno.h>
  42 #include <stdlib.h>
  43 #include <stdio.h>
  44 #include <string.h>
  45
  46 #include "stty.h"
  47 #include "extern.h"
  48
  49 __BEGIN_DECLS
  50 static int c_key (const void *, const void *);
  51 void    f_all (struct info *);
  52 void    f_cbreak (struct info *);
  53 void    f_columns (struct info *);
  54 void    f_dec (struct info *);
  55 void    f_ek (struct info *);
  56 void    f_everything (struct info *);
  57 void    f_extproc (struct info *);
  58 void    f_ispeed (struct info *);
  59 void    f_nl (struct info *);
  60 void    f_ospeed (struct info *);
  61 void    f_raw (struct info *);
  62 void    f_rows (struct info *);
  63 void    f_sane (struct info *);
  64 void    f_size (struct info *);
  65 void    f_speed (struct info *);
  66 void    f_tty (struct info *);
  67 __END_DECLS
  68
  69 static struct key {
  70         const char *name;                       /* name */
  71         void (*f) (struct info *);              /* function */
  72 #define F_NEEDARG       0x01                    /* needs an argument */
  73 #define F_OFFOK         0x02                    /* can turn off */
  74         int flags;
  75 } keys[] = {
  76         { "all",        f_all,          0 },
  77         { "cbreak",     f_cbreak,       F_OFFOK },
  78         { "cols",       f_columns,      F_NEEDARG },
  79         { "columns",    f_columns,      F_NEEDARG },
  80         { "cooked",     f_sane,         0 },
  81         { "dec",        f_dec,          0 },
  82         { "ek",         f_ek,           0 },
  83         { "everything", f_everything,   0 },
  84         { "extproc",    f_extproc,      F_OFFOK },
  85         { "ispeed",     f_ispeed,       F_NEEDARG },
  86         { "new",        f_tty,          0 },
  87         { "nl",         f_nl,           F_OFFOK },
  88         { "old",        f_tty,          0 },
  89         { "ospeed",     f_ospeed,       F_NEEDARG },
  90         { "raw",        f_raw,          F_OFFOK },
  91         { "rows",       f_rows,         F_NEEDARG },
  92         { "sane",       f_sane,         0 },
  93         { "size",       f_size,         0 },
  94         { "speed",      f_speed,        0 },
  95         { "tty",        f_tty,          0 },
  96 };
  97
  98 static int
  99 c_key(const void *a, const void *b)
 100 {
 101
 102         return (strcmp(((const struct key *)a)->name, ((const struct key *)b)->name));
 103 }
 104
 105 int
 106 ksearch(char ***argvp, struct info *ip)
 107 {
 108         char *name;
 109         struct key *kp, tmp;
 110
 111         name = **argvp;
 112         if (*name == '-') {
 113                 ip->off = 1;
 114                 ++name;
 115         } else
 116                 ip->off = 0;
 117
 118         tmp.name = name;
 119         if (!(kp = (struct key *)bsearch(&tmp, keys,
 120             sizeof(keys)/sizeof(struct key), sizeof(struct key), c_key)))
 121                 return (0);
 122         if (!(kp->flags & F_OFFOK) && ip->off) {
 123                 warnx("illegal option -- -%s", name);
 124                 usage();
 125         }
 126         if (kp->flags & F_NEEDARG && !(ip->arg = *++*argvp)) {
 127                 warnx("option requires an argument -- %s", name);
 128                 usage();
 129         }
 130         kp->f(ip);
 131         return (1);
 132 }
 133
 134 void
 135 f_all(struct info *ip)
 136 {
 137         print(&ip->t, &ip->win, ip->ldisc, BSD);
 138 }
 139
 140 void
 141 f_cbreak(struct info *ip)
 142 {
 143
 144         if (ip->off)
 145                 f_sane(ip);
 146         else {
 147                 ip->t.c_iflag |= BRKINT|IXON|IMAXBEL;
 148                 ip->t.c_oflag |= OPOST;
 149                 ip->t.c_lflag |= ISIG|IEXTEN;
 150                 ip->t.c_lflag &= ~ICANON;
 151                 ip->set = 1;
 152         }
 153 }
 154
 155 void
 156 f_columns(struct info *ip)
 157 {
 158
 159         ip->win.ws_col = atoi(ip->arg);
 160         ip->wset = 1;
 161 }
 162
 163 void
 164 f_dec(struct info *ip)
 165 {
 166
 167         ip->t.c_cc[VERASE] = (u_char)0177;
 168         ip->t.c_cc[VKILL] = CTRL('u');
 169         ip->t.c_cc[VINTR] = CTRL('c');
 170         ip->t.c_lflag &= ~ECHOPRT;
 171         ip->t.c_lflag |= ECHOE|ECHOKE|ECHOCTL;
 172         ip->t.c_iflag &= ~IXANY;
 173         ip->set = 1;
 174 }
 175
 176 void
 177 f_ek(struct info *ip)
 178 {
 179
 180         ip->t.c_cc[VERASE] = CERASE;
 181         ip->t.c_cc[VKILL] = CKILL;
 182         ip->set = 1;
 183 }
 184
 185 void
 186 f_everything(struct info *ip)
 187 {
 188
 189         print(&ip->t, &ip->win, ip->ldisc, BSD);
 190 }
 191
 192 void
 193 f_extproc(struct info *ip)
 194 {
 195
 196         if (ip->off) {
 197                 int tmp = 0;
 198                 ioctl(ip->fd, TIOCEXT, &tmp);
 199         } else {
 200                 int tmp = 1;
 201                 ioctl(ip->fd, TIOCEXT, &tmp);
 202         }
 203 }
 204
 205 void
 206 f_ispeed(struct info *ip)
 207 {
 208
 209         cfsetispeed(&ip->t, (speed_t)atoi(ip->arg));
 210         ip->set = 1;
 211 }
 212
 213 void
 214 f_nl(struct info *ip)
 215 {
 216
 217         if (ip->off) {
 218                 ip->t.c_iflag |= ICRNL;
 219                 ip->t.c_oflag |= ONLCR;
 220         } else {
 221                 ip->t.c_iflag &= ~ICRNL;
 222                 ip->t.c_oflag &= ~ONLCR;
 223         }
 224         ip->set = 1;
 225 }
 226
 227 void
 228 f_ospeed(struct info *ip)
 229 {
 230
 231         cfsetospeed(&ip->t, (speed_t)atoi(ip->arg));
 232         ip->set = 1;
 233 }
 234
 235 void
 236 f_raw(struct info *ip)
 237 {
 238
 239         if (ip->off)
 240                 f_sane(ip);
 241         else {
 242                 cfmakeraw(&ip->t);
 243                 ip->t.c_cflag &= ~(CSIZE|PARENB);
 244                 ip->t.c_cflag |= CS8;
 245                 ip->set = 1;
 246         }
 247 }
 248
 249 void
 250 f_rows(struct info *ip)
 251 {
 252
 253         ip->win.ws_row = atoi(ip->arg);
 254         ip->wset = 1;
 255 }
 256
 257 void
 258 f_sane(struct info *ip)
 259 {
 260
 261         ip->t.c_cflag = TTYDEF_CFLAG | (ip->t.c_cflag & CLOCAL);
 262         ip->t.c_iflag = TTYDEF_IFLAG;
 263         ip->t.c_iflag |= ICRNL;
 264         /* preserve user-preference flags in lflag */
 265 #define LKEEP   (ECHOKE|ECHOE|ECHOK|ECHOPRT|ECHOCTL|ALTWERASE|TOSTOP|NOFLSH)
 266         ip->t.c_lflag = TTYDEF_LFLAG | (ip->t.c_lflag & LKEEP);
 267         ip->t.c_oflag = TTYDEF_OFLAG;
 268         ip->set = 1;
 269 }
 270
 271 void
 272 f_size(struct info *ip)
 273 {
 274
 275         printf("%d %d\n", ip->win.ws_row, ip->win.ws_col);
 276 }
 277
 278 void
 279 f_speed(struct info *ip)
 280 {
 281
 282         printf("%lu\n", (u_long)cfgetospeed(&ip->t));
 283 }
 284
 285 void
 286 f_tty(struct info *ip)
 287 {
 288         int tmp;
 289
 290         tmp = TTYDISC;
 291         if (ioctl(ip->fd, TIOCSETD, &tmp) < 0)
 292                 err(1, "TIOCSETD");
 293 }