1/*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1980, 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33 34__FBSDID("$FreeBSD$"); 35 36#ifndef lint 37static const char copyright[] = 38"@(#) Copyright (c) 1980, 1991, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"; 40#endif 41 42#ifndef lint 43static const char sccsid[] = "@(#)tset.c 8.1 (Berkeley) 6/9/93"; 44#endif 45 46#include <sys/types.h> 47#include <sys/ioctl.h> 48 49#include <ctype.h> 50#include <err.h> 51#include <stdio.h> 52#include <stdlib.h> 53#include <string.h> 54#include <termcap.h> 55#include <termios.h> 56#include <unistd.h> 57 58#include "extern.h" 59 60void obsolete(char *[]); 61void report(const char *, int, u_int); 62void usage(void); 63 64struct termios mode, oldmode; 65 66int erasech; /* new erase character */ 67int intrchar; /* new interrupt character */ 68int isreset; /* invoked as reset */ 69int killch; /* new kill character */ 70int Lines, Columns; /* window size */ 71speed_t Ospeed; 72 73int 74main(int argc, char *argv[]) 75{ 76#ifdef TIOCGWINSZ 77 struct winsize win; 78#endif 79 int ch, noinit, noset, quiet, Sflag, sflag, showterm, usingupper; 80 char *p, *tcapbuf; 81 const char *ttype; 82 83 if (tcgetattr(STDERR_FILENO, &mode) < 0) 84 err(1, "standard error"); 85 86 oldmode = mode; 87 Ospeed = cfgetospeed(&mode); 88 89 if ((p = strrchr(*argv, '/'))) 90 ++p; 91 else 92 p = *argv; 93 usingupper = isupper(*p); 94 if (!strcasecmp(p, "reset")) { 95 isreset = 1; 96 reset_mode(); 97 } 98 99 obsolete(argv); 100 noinit = noset = quiet = Sflag = sflag = showterm = 0; 101 while ((ch = getopt(argc, argv, "-a:d:e:Ii:k:m:np:QSrs")) != -1) { 102 switch (ch) { 103 case '-': /* display term only */ 104 noset = 1; 105 break; 106 case 'a': /* OBSOLETE: map identifier to type */ 107 add_mapping("arpanet", optarg); 108 break; 109 case 'd': /* OBSOLETE: map identifier to type */ 110 add_mapping("dialup", optarg); 111 break; 112 case 'e': /* erase character */ 113 erasech = optarg[0] == '^' && optarg[1] != '\0' ? 114 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 115 optarg[0]; 116 break; 117 case 'I': /* no initialization strings */ 118 noinit = 1; 119 break; 120 case 'i': /* interrupt character */ 121 intrchar = optarg[0] == '^' && optarg[1] != '\0' ? 122 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 123 optarg[0]; 124 break; 125 case 'k': /* kill character */ 126 killch = optarg[0] == '^' && optarg[1] != '\0' ? 127 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 128 optarg[0]; 129 break; 130 case 'm': /* map identifier to type */ 131 add_mapping(NULL, optarg); 132 break; 133 case 'n': /* OBSOLETE: set new tty driver */ 134 break; 135 case 'p': /* OBSOLETE: map identifier to type */ 136 add_mapping("plugboard", optarg); 137 break; 138 case 'Q': /* don't output control key settings */ 139 quiet = 1; 140 break; 141 case 'S': /* output TERM/TERMCAP strings */ 142 Sflag = 1; 143 break; 144 case 'r': /* display term on stderr */ 145 showterm = 1; 146 break; 147 case 's': /* output TERM/TERMCAP strings */ 148 sflag = 1; 149 break; 150 case '?': 151 default: 152 usage(); 153 } 154 } 155 argc -= optind; 156 argv += optind; 157 158 if (argc > 1) 159 usage(); 160 161 ttype = get_termcap_entry(*argv, &tcapbuf); 162 163 if (!noset) { 164 Columns = tgetnum("co"); 165 Lines = tgetnum("li"); 166 167#ifdef TIOCGWINSZ 168 /* Set window size */ 169 (void)ioctl(STDERR_FILENO, TIOCGWINSZ, &win); 170 if (win.ws_row == 0 && win.ws_col == 0 && 171 Lines > 0 && Columns > 0) { 172 win.ws_row = Lines; 173 win.ws_col = Columns; 174 (void)ioctl(STDERR_FILENO, TIOCSWINSZ, &win); 175 } 176#endif 177 set_control_chars(); 178 set_conversions(usingupper); 179 180 if (!noinit) 181 set_init(); 182 183 /* Set the modes if they've changed. */ 184 if (memcmp(&mode, &oldmode, sizeof(mode))) 185 tcsetattr(STDERR_FILENO, TCSADRAIN, &mode); 186 } 187 188 if (noset) 189 (void)printf("%s\n", ttype); 190 else { 191 if (showterm) 192 (void)fprintf(stderr, "Terminal type is %s.\n", ttype); 193 /* 194 * If erase, kill and interrupt characters could have been 195 * modified and not -Q, display the changes. 196 */ 197 if (!quiet) { 198 report("Erase", VERASE, CERASE); 199 report("Kill", VKILL, CKILL); 200 report("Interrupt", VINTR, CINTR); 201 } 202 } 203 204 if (Sflag) { 205 (void)printf("%s ", ttype); 206 if (strlen(tcapbuf) > 0) 207 wrtermcap(tcapbuf); 208 } 209 210 if (sflag) { 211 /* 212 * Figure out what shell we're using. A hack, we look for an 213 * environmental variable SHELL ending in "csh". 214 */ 215 if ((p = getenv("SHELL")) && 216 !strcmp(p + strlen(p) - 3, "csh")) { 217 printf("set noglob;\nsetenv TERM %s;\n", ttype); 218 if (strlen(tcapbuf) > 0) { 219 printf("setenv TERMCAP '"); 220 wrtermcap(tcapbuf); 221 printf("';\n"); 222 } 223 printf("unset noglob;\n"); 224 } else { 225 printf("TERM=%s;\n", ttype); 226 if (strlen(tcapbuf) > 0) { 227 printf("TERMCAP='"); 228 wrtermcap(tcapbuf); 229 printf("';\nexport TERMCAP;\n"); 230 } 231 printf("export TERM;\n"); 232 } 233 } 234 235 exit(0); 236} 237 238/* 239 * Tell the user if a control key has been changed from the default value. 240 */ 241void 242report(const char *name, int which, u_int def) 243{ 244 u_int old, new; 245 246 new = mode.c_cc[which]; 247 old = oldmode.c_cc[which]; 248 249 if (old == new && old == def) 250 return; 251 252 (void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to"); 253 254 if (new == 010) 255 (void)fprintf(stderr, "backspace.\n"); 256 else if (new == 0177) 257 (void)fprintf(stderr, "delete.\n"); 258 else if (new < 040) { 259 new ^= 0100; 260 (void)fprintf(stderr, "control-%c (^%c).\n", new, new); 261 } else 262 (void)fprintf(stderr, "%c.\n", new); 263} 264 265/* 266 * Convert the obsolete argument form into something that getopt can handle. 267 * This means that -e, -i and -k get default arguments supplied for them. 268 */ 269void 270obsolete(char *argv[]) 271{ 272 for (; *argv; ++argv) { 273 if (argv[0][0] != '-' || (argv[1] && argv[1][0] != '-') || 274 (argv[0][1] != 'e' && argv[0][1] != 'i' && argv[0][1] != 'k') || 275 argv[0][2] != '\0') 276 continue; 277 switch(argv[0][1]) { 278 case 'e': 279 argv[0] = strdup("-e^H"); 280 break; 281 case 'i': 282 argv[0] = strdup("-i^C"); 283 break; 284 case 'k': 285 argv[0] = strdup("-k^U"); 286 break; 287 } 288 } 289} 290 291void 292usage(void) 293{ 294 (void)fprintf(stderr, "%s\n%s\n", 295"usage: tset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]", 296" reset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]"); 297 exit(1); 298} 299 300