1 /* $OpenBSD: key.c,v 1.18 2019/06/28 13:35:00 deraadt Exp $ */ 2 /* $NetBSD: key.c,v 1.11 1995/09/07 06:57:11 jtc Exp $ */ 3 4 /*- 5 * Copyright (c) 1991, 1993, 1994 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/types.h> 34 #include <sys/ioctl.h> 35 36 #include <err.h> 37 #include <errno.h> 38 #include <limits.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <termios.h> 43 44 #include "stty.h" 45 #include "extern.h" 46 47 __BEGIN_DECLS 48 void f_all(struct info *); 49 void f_cbreak(struct info *); 50 void f_columns(struct info *); 51 void f_dec(struct info *); 52 void f_ek(struct info *); 53 void f_everything(struct info *); 54 void f_extproc(struct info *); 55 void f_ispeed(struct info *); 56 void f_lcase(struct info *); 57 void f_nl(struct info *); 58 void f_ospeed(struct info *); 59 void f_raw(struct info *); 60 void f_rows(struct info *); 61 void f_sane(struct info *); 62 void f_size(struct info *); 63 void f_speed(struct info *); 64 void f_ostart(struct info *); 65 void f_ostop(struct info *); 66 void f_tty(struct info *); 67 __END_DECLS 68 69 static struct key { 70 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 { "lcase", f_lcase, 0 }, 87 { "new", f_tty, 0 }, 88 { "nl", f_nl, F_OFFOK }, 89 { "old", f_tty, 0 }, 90 { "ospeed", f_ospeed, F_NEEDARG }, 91 { "ostart", f_ostart, 0 }, 92 { "ostop", f_ostop, 0 }, 93 { "raw", f_raw, F_OFFOK }, 94 { "rows", f_rows, F_NEEDARG }, 95 { "sane", f_sane, 0 }, 96 { "size", f_size, 0 }, 97 { "speed", f_speed, 0 }, 98 { "tty", f_tty, 0 }, 99 }; 100 101 static int 102 c_key(const void *a, const void *b) 103 { 104 105 return (strcmp(((struct key *)a)->name, ((struct key *)b)->name)); 106 } 107 108 int 109 ksearch(char ***argvp, struct info *ip) 110 { 111 char *name; 112 struct key *kp, tmp; 113 114 name = **argvp; 115 if (*name == '-') { 116 ip->off = 1; 117 ++name; 118 } else 119 ip->off = 0; 120 121 tmp.name = name; 122 if (!(kp = (struct key *)bsearch(&tmp, keys, 123 sizeof(keys)/sizeof(struct key), sizeof(struct key), c_key))) 124 return (0); 125 if (!(kp->flags & F_OFFOK) && ip->off) { 126 warnx("illegal option -- -%s", name); 127 usage(); 128 } 129 if (kp->flags & F_NEEDARG && !(ip->arg = *++*argvp)) { 130 warnx("option requires an argument -- %s", name); 131 usage(); 132 } 133 kp->f(ip); 134 return (1); 135 } 136 137 void 138 f_all(struct info *ip) 139 { 140 print(&ip->t, &ip->win, ip->ldisc, BSD); 141 } 142 143 void 144 f_cbreak(struct info *ip) 145 { 146 147 if (ip->off) 148 f_sane(ip); 149 else { 150 ip->t.c_iflag |= BRKINT|IXON|IMAXBEL; 151 ip->t.c_oflag |= OPOST; 152 ip->t.c_lflag |= ISIG|IEXTEN; 153 ip->t.c_lflag &= ~ICANON; 154 ip->set = 1; 155 } 156 } 157 158 void 159 f_columns(struct info *ip) 160 { 161 const char *error; 162 163 ip->win.ws_col = strtonum(ip->arg, 0, USHRT_MAX, &error); 164 if (error) 165 err(1, "cols %s", ip->arg); 166 ip->wset = 1; 167 } 168 169 void 170 f_dec(struct info *ip) 171 { 172 173 ip->t.c_cc[VERASE] = (u_char)0177; 174 ip->t.c_cc[VKILL] = CTRL('u'); 175 ip->t.c_cc[VINTR] = CTRL('c'); 176 ip->t.c_lflag &= ~ECHOPRT; 177 ip->t.c_lflag |= ECHOE|ECHOKE|ECHOCTL; 178 ip->t.c_iflag &= ~IXANY; 179 ip->set = 1; 180 } 181 182 void 183 f_ek(struct info *ip) 184 { 185 186 ip->t.c_cc[VERASE] = CERASE; 187 ip->t.c_cc[VKILL] = CKILL; 188 ip->set = 1; 189 } 190 191 void 192 f_everything(struct info *ip) 193 { 194 195 print(&ip->t, &ip->win, ip->ldisc, BSD); 196 } 197 198 void 199 f_extproc(struct info *ip) 200 { 201 202 if (ip->off) { 203 int tmp = 0; 204 (void)ioctl(ip->fd, TIOCEXT, &tmp); 205 } else { 206 int tmp = 1; 207 (void)ioctl(ip->fd, TIOCEXT, &tmp); 208 } 209 ip->set = 1; 210 } 211 212 void 213 f_ispeed(struct info *ip) 214 { 215 const char *errstr; 216 speed_t speed; 217 218 speed = strtonum(ip->arg, 0, UINT_MAX, &errstr); 219 if (errstr) 220 err(1, "ispeed %s", ip->arg); 221 cfsetispeed(&ip->t, speed); 222 ip->set = 1; 223 } 224 225 void 226 f_lcase(struct info *ip) 227 { 228 if (ip->off) { 229 ip->t.c_iflag &= ~IUCLC; 230 ip->t.c_oflag &= ~OLCUC; 231 ip->t.c_lflag &= ~XCASE; 232 } else { 233 ip->t.c_iflag |= IUCLC; 234 ip->t.c_oflag |= OLCUC; 235 ip->t.c_lflag |= XCASE; 236 } 237 ip->set = 1; 238 } 239 240 void 241 f_nl(struct info *ip) 242 { 243 244 if (ip->off) { 245 ip->t.c_iflag |= ICRNL; 246 ip->t.c_oflag |= ONLCR; 247 } else { 248 ip->t.c_iflag &= ~ICRNL; 249 ip->t.c_oflag &= ~ONLCR; 250 } 251 ip->set = 1; 252 } 253 254 void 255 f_ospeed(struct info *ip) 256 { 257 const char *errstr; 258 speed_t speed; 259 260 speed = strtonum(ip->arg, 0, UINT_MAX, &errstr); 261 if (errstr) 262 err(1, "ospeed %s", ip->arg); 263 cfsetospeed(&ip->t, speed); 264 ip->set = 1; 265 } 266 267 void 268 f_raw(struct info *ip) 269 { 270 271 if (ip->off) 272 f_sane(ip); 273 else { 274 cfmakeraw(&ip->t); 275 ip->t.c_cflag &= ~(CSIZE|PARENB); 276 ip->t.c_cflag |= CS8; 277 ip->set = 1; 278 } 279 } 280 281 void 282 f_rows(struct info *ip) 283 { 284 const char *error; 285 286 ip->win.ws_row = strtonum(ip->arg, 0, USHRT_MAX, &error); 287 if (error) 288 err(1, "rows %s", ip->arg); 289 ip->wset = 1; 290 } 291 292 void 293 f_sane(struct info *ip) 294 { 295 296 ip->t.c_cflag = TTYDEF_CFLAG | (ip->t.c_cflag & (CLOCAL|CRTSCTS)); 297 ip->t.c_iflag = TTYDEF_IFLAG; 298 ip->t.c_iflag |= ICRNL; 299 /* preserve user-preference flags in lflag */ 300 #define LKEEP (ECHOKE|ECHOE|ECHOK|ECHOPRT|ECHOCTL|ALTWERASE|TOSTOP|NOFLSH) 301 ip->t.c_lflag = TTYDEF_LFLAG | (ip->t.c_lflag & LKEEP); 302 ip->t.c_oflag = TTYDEF_OFLAG; 303 ip->set = 1; 304 } 305 306 void 307 f_size(struct info *ip) 308 { 309 310 (void)printf("%d %d\n", ip->win.ws_row, ip->win.ws_col); 311 } 312 313 void 314 f_speed(struct info *ip) 315 { 316 317 (void)printf("%d\n", cfgetospeed(&ip->t)); 318 } 319 320 void 321 f_tty(struct info *ip) 322 { 323 int tmp; 324 325 tmp = TTYDISC; 326 if (ioctl(ip->fd, TIOCSETD, &tmp) == -1) 327 err(1, "TIOCSETD"); 328 } 329 330 void 331 f_ostart(struct info *ip) 332 { 333 if (ioctl(ip->fd, TIOCSTART) == -1) 334 err(1, "TIOCSTART"); 335 } 336 337 void 338 f_ostop(struct info *ip) 339 { 340 if (ioctl(ip->fd, TIOCSTOP) == -1) 341 err(1, "TIOCSTOP"); 342 } 343