adv_cmds/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
  34 #ifndef lint
  35 #if 0
  36 static char sccsid[] = "@(#)key.c       8.3 (Berkeley) 4/2/94";
  37 #endif
  38 #endif /* not lint */
  39 #include <sys/cdefs.h>
  40 __RCSID("$FreeBSD: src/bin/stty/key.c,v 1.17 2002/06/30 05:15:04 obrien Exp $");
  41
  42 #include <sys/types.h>
  43
  44 #include <err.h>
  45 #include <errno.h>
  46 #include <stdlib.h>
  47 #include <stdio.h>
  48 #include <string.h>
  49
  50 #include "stty.h"
  51 #include "extern.h"
  52
  53 __BEGIN_DECLS
  54 static int c_key(const void *, const void *);
  55 void    f_all(struct info *);
  56 void    f_cbreak(struct info *);
  57 void    f_columns(struct info *);
  58 void    f_dec(struct info *);
  59 void    f_ek(struct info *);
  60 void    f_everything(struct info *);
  61 void    f_extproc(struct info *);
  62 void    f_ispeed(struct info *);
  63 void    f_nl(struct info *);
  64 void    f_ospeed(struct info *);
  65 void    f_raw(struct info *);
  66 void    f_rows(struct info *);
  67 void    f_sane(struct info *);
  68 void    f_size(struct info *);
  69 void    f_speed(struct info *);
  70 void    f_tty(struct info *);
  71 __END_DECLS
  72
  73 static struct key {
  74         const char *name;                       /* name */
  75         void (*f)(struct info *);               /* function */
  76 #define F_NEEDARG       0x01                    /* needs an argument */
  77 #define F_OFFOK         0x02                    /* can turn off */
  78         int flags;
  79 } keys[] = {
  80         { "all",        f_all,          0 },
  81         { "cbreak",     f_cbreak,       F_OFFOK },
  82         { "cols",       f_columns,      F_NEEDARG },
  83         { "columns",    f_columns,      F_NEEDARG },
  84         { "cooked",     f_sane,         0 },
  85         { "dec",        f_dec,          0 },
  86         { "ek",         f_ek,           0 },
  87         { "everything", f_everything,   0 },
  88         { "extproc",    f_extproc,      F_OFFOK },
  89         { "ispeed",     f_ispeed,       F_NEEDARG },
  90         { "new",        f_tty,          0 },
  91         { "nl",         f_nl,           F_OFFOK },
  92         { "old",        f_tty,          0 },
  93         { "ospeed",     f_ospeed,       F_NEEDARG },
  94         { "raw",        f_raw,          F_OFFOK },
  95         { "rows",       f_rows,         F_NEEDARG },
  96         { "sane",       f_sane,         0 },
  97         { "size",       f_size,         0 },
  98         { "speed",      f_speed,        0 },
  99         { "tty",        f_tty,          0 },
 100 };
 101
 102 static int
 103 c_key(const void *a, const void *b)
 104 {
 105
 106         return (strcmp(((const struct key *)a)->name, ((const struct key *)b)->name));
 107 }
 108
 109 int
 110 ksearch(char ***argvp, struct info *ip)
 111 {
 112         char *name;
 113         struct key *kp, tmp;
 114
 115         name = **argvp;
 116         if (*name == '-') {
 117                 ip->off = 1;
 118                 ++name;
 119         } else
 120                 ip->off = 0;
 121
 122         tmp.name = name;
 123         if (!(kp = (struct key *)bsearch(&tmp, keys,
 124             sizeof(keys)/sizeof(struct key), sizeof(struct key), c_key)))
 125                 return (0);
 126         if (!(kp->flags & F_OFFOK) && ip->off) {
 127                 warnx("illegal option -- -%s", name);
 128                 usage();
 129         }
 130         if (kp->flags & F_NEEDARG && !(ip->arg = *++*argvp)) {
 131                 warnx("option requires an argument -- %s", name);
 132                 usage();
 133         }
 134         kp->f(ip);
 135         return (1);
 136 }
 137
 138 void
 139 f_all(struct info *ip)
 140 {
 141         print(&ip->t, &ip->win, ip->ldisc, BSD);
 142 }
 143
 144 void
 145 f_cbreak(struct info *ip)
 146 {
 147
 148         if (ip->off)
 149                 f_sane(ip);
 150         else {
 151                 ip->t.c_iflag |= BRKINT|IXON|IMAXBEL;
 152                 ip->t.c_oflag |= OPOST;
 153                 ip->t.c_lflag |= ISIG|IEXTEN;
 154                 ip->t.c_lflag &= ~ICANON;
 155                 ip->set = 1;
 156         }
 157 }
 158
 159 void
 160 f_columns(struct info *ip)
 161 {
 162
 163         ip->win.ws_col = atoi(ip->arg);
 164         ip->wset = 1;
 165 }
 166
 167 void
 168 f_dec(struct info *ip)
 169 {
 170
 171         ip->t.c_cc[VERASE] = (u_char)0177;
 172         ip->t.c_cc[VKILL] = CTRL('u');
 173         ip->t.c_cc[VINTR] = CTRL('c');
 174         ip->t.c_lflag &= ~ECHOPRT;
 175         ip->t.c_lflag |= ECHOE|ECHOKE|ECHOCTL;
 176         ip->t.c_iflag &= ~IXANY;
 177         ip->set = 1;
 178 }
 179
 180 void
 181 f_ek(struct info *ip)
 182 {
 183
 184         ip->t.c_cc[VERASE] = CERASE;
 185         ip->t.c_cc[VKILL] = CKILL;
 186         ip->set = 1;
 187 }
 188
 189 void
 190 f_everything(struct info *ip)
 191 {
 192
 193         print(&ip->t, &ip->win, ip->ldisc, BSD);
 194 }
 195
 196 void
 197 f_extproc(struct info *ip)
 198 {
 199
 200         if (ip->off) {
 201                 int tmp = 0;
 202                 (void)ioctl(ip->fd, TIOCEXT, &tmp);
 203         } else {
 204                 int tmp = 1;
 205                 (void)ioctl(ip->fd, TIOCEXT, &tmp);
 206         }
 207 }
 208
 209 void
 210 f_ispeed(struct info *ip)
 211 {
 212
 213         cfsetispeed(&ip->t, (speed_t)atoi(ip->arg));
 214         ip->set = 1;
 215 }
 216
 217 void
 218 f_nl(struct info *ip)
 219 {
 220
 221         if (ip->off) {
 222                 ip->t.c_iflag |= ICRNL;
 223                 ip->t.c_oflag |= ONLCR;
 224         } else {
 225                 ip->t.c_iflag &= ~ICRNL;
 226                 ip->t.c_oflag &= ~ONLCR;
 227         }
 228         ip->set = 1;
 229 }
 230
 231 void
 232 f_ospeed(struct info *ip)
 233 {
 234
 235         cfsetospeed(&ip->t, (speed_t)atoi(ip->arg));
 236         ip->set = 1;
 237 }
 238
 239 void
 240 f_raw(struct info *ip)
 241 {
 242
 243         if (ip->off)
 244                 f_sane(ip);
 245         else {
 246                 cfmakeraw(&ip->t);
 247                 ip->t.c_cflag &= ~(CSIZE|PARENB);
 248                 ip->t.c_cflag |= CS8;
 249                 ip->set = 1;
 250         }
 251 }
 252
 253 void
 254 f_rows(struct info *ip)
 255 {
 256
 257         ip->win.ws_row = atoi(ip->arg);
 258         ip->wset = 1;
 259 }
 260
 261 void
 262 f_sane(struct info *ip)
 263 {
 264
 265         ip->t.c_cflag = TTYDEF_CFLAG | (ip->t.c_cflag & CLOCAL);
 266         ip->t.c_iflag = TTYDEF_IFLAG;
 267         ip->t.c_iflag |= ICRNL;
 268         /* preserve user-preference flags in lflag */
 269 #define LKEEP   (ECHOKE|ECHOE|ECHOK|ECHOPRT|ECHOCTL|ALTWERASE|TOSTOP|NOFLSH)
 270         ip->t.c_lflag = TTYDEF_LFLAG | (ip->t.c_lflag & LKEEP);
 271         ip->t.c_oflag = TTYDEF_OFLAG;
 272         ip->set = 1;
 273 }
 274
 275 void
 276 f_size(struct info *ip)
 277 {
 278
 279         (void)printf("%d %d\n", ip->win.ws_row, ip->win.ws_col);
 280 }
 281
 282 void
 283 f_speed(struct info *ip)
 284 {
 285
 286         (void)printf("%lu\n", (u_long)cfgetospeed(&ip->t));
 287 }
 288
 289 void
 290 f_tty(struct info *ip)
 291 {
 292         int tmp;
 293
 294         tmp = TTYDISC;
 295         if (ioctl(ip->fd, TIOCSETD, &tmp) < 0)
 296                 err(1, "TIOCSETD");
 297 }