tset.c revision 2598
1/*- 2 * Copyright (c) 1980, 1991, 1993 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 35static char copyright[] = 36"@(#) Copyright (c) 1980, 1991, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38#endif /* not lint */ 39 40#ifndef lint 41static char sccsid[] = "@(#)tset.c 8.1 (Berkeley) 6/9/93"; 42#endif /* not lint */ 43 44#include <sys/types.h> 45#include <sys/ioctl.h> 46#include <termios.h> 47#include <errno.h> 48#include <unistd.h> 49#include <stdlib.h> 50#include <stdio.h> 51#include <ctype.h> 52#include <string.h> 53#include "extern.h" 54 55void obsolete __P((char *[])); 56void report __P((char *, int, u_int)); 57void usage __P((void)); 58 59struct termios mode, oldmode; 60 61int erasechar; /* new erase character */ 62int intrchar; /* new interrupt character */ 63int isreset; /* invoked as reset */ 64int killchar; /* new kill character */ 65int lines, columns; /* window size */ 66 67int 68main(argc, argv) 69 int argc; 70 char *argv[]; 71{ 72#ifdef TIOCGWINSZ 73 struct winsize win; 74#endif 75 int ch, noinit, noset, quiet, Sflag, sflag, showterm, usingupper; 76 char savech, *p, *t, *tcapbuf, *ttype; 77 78 if (tcgetattr(STDERR_FILENO, &mode) < 0) 79 err("standard error: %s", strerror(errno)); 80 81 oldmode = mode; 82 ospeed = cfgetospeed(&mode); 83 84 if (p = strrchr(*argv, '/')) 85 ++p; 86 else 87 p = *argv; 88 usingupper = isupper(*p); 89 if (!strcasecmp(p, "reset")) { 90 isreset = 1; 91 reset_mode(); 92 } 93 94 obsolete(argv); 95 noinit = noset = quiet = Sflag = sflag = showterm = 0; 96 while ((ch = getopt(argc, argv, "-a:d:e:Ii:k:m:np:QSrs")) != EOF) { 97 switch (ch) { 98 case '-': /* display term only */ 99 noset = 1; 100 break; 101 case 'a': /* OBSOLETE: map identifier to type */ 102 add_mapping("arpanet", optarg); 103 break; 104 case 'd': /* OBSOLETE: map identifier to type */ 105 add_mapping("dialup", optarg); 106 break; 107 case 'e': /* erase character */ 108 erasechar = optarg[0] == '^' && optarg[1] != '\0' ? 109 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 110 optarg[0]; 111 break; 112 case 'I': /* no initialization strings */ 113 noinit = 1; 114 break; 115 case 'i': /* interrupt character */ 116 intrchar = optarg[0] == '^' && optarg[1] != '\0' ? 117 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 118 optarg[0]; 119 break; 120 case 'k': /* kill character */ 121 killchar = optarg[0] == '^' && optarg[1] != '\0' ? 122 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 123 optarg[0]; 124 break; 125 case 'm': /* map identifier to type */ 126 add_mapping(NULL, optarg); 127 break; 128 case 'n': /* OBSOLETE: set new tty driver */ 129 break; 130 case 'p': /* OBSOLETE: map identifier to type */ 131 add_mapping("plugboard", optarg); 132 break; 133 case 'Q': /* don't output control key settings */ 134 quiet = 1; 135 break; 136 case 'S': /* output TERM/TERMCAP strings */ 137 Sflag = 1; 138 break; 139 case 'r': /* display term on stderr */ 140 showterm = 1; 141 break; 142 case 's': /* output TERM/TERMCAP strings */ 143 sflag = 1; 144 break; 145 case '?': 146 default: 147 usage(); 148 } 149 } 150 argc -= optind; 151 argv += optind; 152 153 if (argc > 1) 154 usage(); 155 156 ttype = get_termcap_entry(*argv, &tcapbuf); 157 158 if (!noset) { 159 columns = tgetnum("co"); 160 lines = tgetnum("li"); 161 162#ifdef TIOCGWINSZ 163 /* Set window size */ 164 (void)ioctl(STDERR_FILENO, TIOCGWINSZ, &win); 165 if (win.ws_row == 0 && win.ws_col == 0 && 166 lines > 0 && columns > 0) { 167 win.ws_row = lines; 168 win.ws_col = columns; 169 (void)ioctl(STDERR_FILENO, TIOCSWINSZ, &win); 170 } 171#endif 172 set_control_chars(); 173 set_conversions(usingupper); 174 175 if (!noinit) 176 set_init(); 177 178 /* Set the modes if they've changed. */ 179 if (memcmp(&mode, &oldmode, sizeof(mode))) 180 tcsetattr(STDERR_FILENO, TCSADRAIN, &mode); 181 } 182 183 /* 184 * The termcap file generally has a two-character name first in each 185 * entry followed by more descriptive names. If we ended up with the 186 * first one, we switch to the second one for setting or reporting 187 * information. 188 */ 189 p = strpbrk(tcapbuf, "|:"); 190 if (p != NULL && *p != ':' && !strncmp(ttype, tcapbuf, p - tcapbuf)) { 191 t = ++p; 192 if (p = strpbrk(p, "|:")) { 193 savech = *p; 194 *p = '\0'; 195 if ((ttype = strdup(t)) == NULL) 196 err("%s", strerror(errno)); 197 *p = savech; 198 } 199 } 200 201 if (noset) 202 (void)printf("%s\n", ttype); 203 else { 204 if (showterm) 205 (void)fprintf(stderr, "Terminal type is %s.\n", ttype); 206 /* 207 * If erase, kill and interrupt characters could have been 208 * modified and not -Q, display the changes. 209 */ 210 if (!quiet) { 211 report("Erase", VERASE, CERASE); 212 report("Kill", VKILL, CKILL); 213 report("Interrupt", VINTR, CINTR); 214 } 215 } 216 217 if (Sflag) { 218 (void)printf("%s ", ttype); 219 wrtermcap(tcapbuf); 220 } 221 222 if (sflag) { 223 /* 224 * Figure out what shell we're using. A hack, we look for an 225 * environmental variable SHELL ending in "csh". 226 */ 227 if ((p = getenv("SHELL")) && 228 !strcmp(p + strlen(p) - 3, "csh")) { 229 p = "set noglob;\nsetenv TERM %s;\nsetenv TERMCAP '"; 230 t = "';\nunset noglob;\n"; 231 } else { 232 p = "TERM=%s;\nTERMCAP='"; 233 t = "';\nexport TERMCAP TERM;\n"; 234 } 235 (void)printf(p, ttype); 236 wrtermcap(tcapbuf); 237 (void)printf(t); 238 } 239 240 exit(0); 241} 242 243/* 244 * Tell the user if a control key has been changed from the default value. 245 */ 246void 247report(name, which, def) 248 char *name; 249 int which; 250 u_int def; 251{ 252 u_int old, new; 253 char *bp, buf[1024]; 254 255 new = mode.c_cc[which]; 256 old = oldmode.c_cc[which]; 257 258 if (old == new && old == def) 259 return; 260 261 (void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to"); 262 263 bp = buf; 264 if (tgetstr("kb", &bp) && new == buf[0] && buf[1] == '\0') 265 (void)fprintf(stderr, "backspace.\n"); 266 else if (new == 0177) 267 (void)fprintf(stderr, "delete.\n"); 268 else if (new < 040) { 269 new ^= 0100; 270 (void)fprintf(stderr, "control-%c (^%c).\n", new, new); 271 } else 272 (void)fprintf(stderr, "%c.\n", new); 273} 274 275/* 276 * Convert the obsolete argument form into something that getopt can handle. 277 * This means that -e, -i and -k get default arguments supplied for them. 278 */ 279void 280obsolete(argv) 281 char *argv[]; 282{ 283 for (; *argv; ++argv) { 284 if (argv[0][0] != '-' || argv[1] && argv[1][0] != '-' || 285 argv[0][1] != 'e' && argv[0][1] != 'i' && 286 argv[0][1] != 'k' || argv[0][2] != '\0') 287 continue; 288 switch(argv[0][1]) { 289 case 'e': 290 argv[0] = "-e^H"; 291 break; 292 case 'i': 293 argv[0] = "-i^C"; 294 break; 295 case 'k': 296 argv[0] = "-k^U"; 297 break; 298 } 299 } 300} 301 302void 303usage() 304{ 305 (void)fprintf(stderr, 306"usage: tset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]\n"); 307 exit(1); 308} 309