1 /* $NetBSD: tset.c,v 1.6 1997/10/20 01:07:54 lukem Exp $ */ 2 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1980, 1991, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)tset.c 8.1 (Berkeley) 6/9/93"; 45 #endif 46 __RCSID("$NetBSD: tset.c,v 1.6 1997/10/20 01:07:54 lukem Exp $"); 47 #endif /* not lint */ 48 49 #include <sys/types.h> 50 #include <sys/ioctl.h> 51 #include <ctype.h> 52 #include <err.h> 53 #include <errno.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <string.h> 57 #include <termcap.h> 58 #include <termios.h> 59 #include <unistd.h> 60 #include "extern.h" 61 62 int main __P((int, char *[])); 63 void obsolete __P((char *[])); 64 void report __P((char *, int, u_int)); 65 void usage __P((void)); 66 67 struct termios mode, oldmode; 68 69 int erasechar; /* new erase character */ 70 int intrchar; /* new interrupt character */ 71 int isreset; /* invoked as reset */ 72 int killchar; /* new kill character */ 73 int lines, columns; /* window size */ 74 75 int 76 main(argc, argv) 77 int argc; 78 char *argv[]; 79 { 80 #ifdef TIOCGWINSZ 81 struct winsize win; 82 #endif 83 int ch, noinit, noset, quiet, Sflag, sflag, showterm, usingupper; 84 char savech, *p, *t, *tcapbuf, *ttype; 85 86 if (tcgetattr(STDERR_FILENO, &mode) < 0) 87 err(1, "standard error"); 88 89 oldmode = mode; 90 ospeed = cfgetospeed(&mode); 91 92 if ((p = strrchr(*argv, '/')) != NULL) 93 ++p; 94 else 95 p = *argv; 96 usingupper = isupper(*p); 97 if (!strcasecmp(p, "reset")) { 98 isreset = 1; 99 reset_mode(); 100 } 101 102 obsolete(argv); 103 noinit = noset = quiet = Sflag = sflag = showterm = 0; 104 while ((ch = getopt(argc, argv, "-a:d:e:Ii:k:m:np:QSrs")) != -1) { 105 switch (ch) { 106 case '-': /* display term only */ 107 noset = 1; 108 break; 109 case 'a': /* OBSOLETE: map identifier to type */ 110 add_mapping("arpanet", optarg); 111 break; 112 case 'd': /* OBSOLETE: map identifier to type */ 113 add_mapping("dialup", optarg); 114 break; 115 case 'e': /* erase character */ 116 erasechar = optarg[0] == '^' && optarg[1] != '\0' ? 117 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 118 optarg[0]; 119 break; 120 case 'I': /* no initialization strings */ 121 noinit = 1; 122 break; 123 case 'i': /* interrupt character */ 124 intrchar = optarg[0] == '^' && optarg[1] != '\0' ? 125 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 126 optarg[0]; 127 break; 128 case 'k': /* kill character */ 129 killchar = optarg[0] == '^' && optarg[1] != '\0' ? 130 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 131 optarg[0]; 132 break; 133 case 'm': /* map identifier to type */ 134 add_mapping(NULL, optarg); 135 break; 136 case 'n': /* OBSOLETE: set new tty driver */ 137 break; 138 case 'p': /* OBSOLETE: map identifier to type */ 139 add_mapping("plugboard", optarg); 140 break; 141 case 'Q': /* don't output control key settings */ 142 quiet = 1; 143 break; 144 case 'S': /* output TERM/TERMCAP strings */ 145 Sflag = 1; 146 break; 147 case 'r': /* display term on stderr */ 148 showterm = 1; 149 break; 150 case 's': /* output TERM/TERMCAP strings */ 151 sflag = 1; 152 break; 153 case '?': 154 default: 155 usage(); 156 } 157 } 158 argc -= optind; 159 argv += optind; 160 161 if (argc > 1) 162 usage(); 163 164 ttype = get_termcap_entry(*argv, &tcapbuf); 165 166 if (!noset) { 167 columns = tgetnum("co"); 168 lines = tgetnum("li"); 169 170 #ifdef TIOCGWINSZ 171 /* Set window size */ 172 (void)ioctl(STDERR_FILENO, TIOCGWINSZ, &win); 173 if (win.ws_row == 0 && win.ws_col == 0 && 174 lines > 0 && columns > 0) { 175 win.ws_row = lines; 176 win.ws_col = columns; 177 (void)ioctl(STDERR_FILENO, TIOCSWINSZ, &win); 178 } 179 #endif 180 set_control_chars(); 181 set_conversions(usingupper); 182 183 if (!noinit) 184 set_init(); 185 186 /* Set the modes if they've changed. */ 187 if (memcmp(&mode, &oldmode, sizeof(mode))) 188 tcsetattr(STDERR_FILENO, TCSADRAIN, &mode); 189 } 190 191 /* Get the terminal name from the entry. */ 192 p = tcapbuf; 193 if (p != NULL && *p != ':') { 194 t = p; 195 if ((p = strpbrk(p, "|:")) != NULL) { 196 savech = *p; 197 *p = '\0'; 198 if ((ttype = strdup(t)) == NULL) 199 err(1, "strdup"); 200 *p = savech; 201 } 202 } 203 204 if (noset) 205 (void)printf("%s\n", ttype); 206 else { 207 if (showterm) 208 (void)fprintf(stderr, "Terminal type is %s.\n", ttype); 209 /* 210 * If erase, kill and interrupt characters could have been 211 * modified and not -Q, display the changes. 212 */ 213 if (!quiet) { 214 report("Erase", VERASE, CERASE); 215 report("Kill", VKILL, CKILL); 216 report("Interrupt", VINTR, CINTR); 217 } 218 } 219 220 if (Sflag) { 221 (void)printf("%s ", ttype); 222 wrtermcap(tcapbuf); 223 } 224 225 if (sflag) { 226 /* 227 * Figure out what shell we're using. A hack, we look for an 228 * environmental variable SHELL ending in "csh". 229 */ 230 if ((p = getenv("SHELL")) && 231 !strcmp(p + strlen(p) - 3, "csh")) { 232 p = "set noglob;\nsetenv TERM %s;\nsetenv TERMCAP '"; 233 t = "';\nunset noglob;\n"; 234 } else { 235 p = "TERM=%s;\nTERMCAP='"; 236 t = "';\nexport TERMCAP TERM;\n"; 237 } 238 (void)printf(p, ttype); 239 wrtermcap(tcapbuf); 240 (void)printf(t); 241 } 242 243 exit(0); 244 } 245 246 /* 247 * Tell the user if a control key has been changed from the default value. 248 */ 249 void 250 report(name, which, def) 251 char *name; 252 int which; 253 u_int def; 254 { 255 u_int old, new; 256 char *bp, buf[1024]; 257 258 new = mode.c_cc[which]; 259 old = oldmode.c_cc[which]; 260 261 if (old == new && old == def) 262 return; 263 264 (void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to"); 265 266 bp = buf; 267 if (tgetstr("kb", &bp) && new == buf[0] && buf[1] == '\0') 268 (void)fprintf(stderr, "backspace.\n"); 269 else if (new == 0177) 270 (void)fprintf(stderr, "delete.\n"); 271 else if (new < 040) { 272 new ^= 0100; 273 (void)fprintf(stderr, "control-%c (^%c).\n", new, new); 274 } else 275 (void)fprintf(stderr, "%c.\n", new); 276 } 277 278 /* 279 * Convert the obsolete argument form into something that getopt can handle. 280 * This means that -e, -i and -k get default arguments supplied for them. 281 */ 282 void 283 obsolete(argv) 284 char *argv[]; 285 { 286 for (; *argv; ++argv) { 287 if (argv[0][0] != '-' || (argv[1] && argv[1][0] != '-') || 288 (argv[0][1] != 'e' && argv[0][1] != 'i' && 289 argv[0][1] != 'k') || argv[0][2] != '\0') 290 continue; 291 switch(argv[0][1]) { 292 case 'e': 293 argv[0] = "-e^H"; 294 break; 295 case 'i': 296 argv[0] = "-i^C"; 297 break; 298 case 'k': 299 argv[0] = "-k^U"; 300 break; 301 } 302 } 303 } 304 305 void 306 usage() 307 { 308 (void)fprintf(stderr, 309 "usage: tset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]\n"); 310 exit(1); 311 } 312