1 /*- 2 * Copyright (c) 1980, 1991 The Regents of the University of California. 3 * 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 char copyright[] = 36 "@(#) Copyright (c) 1980, 1991 The Regents of the University of California.\n\ 37 All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static char sccsid[] = "@(#)tset.c 5.22 (Berkeley) 2/11/93"; 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 55 void obsolete __P((char *[])); 56 void report __P((char *, int, u_int)); 57 void usage __P((void)); 58 59 struct termios mode, oldmode; 60 61 int erasechar; /* new erase character */ 62 int intrchar; /* new interrupt character */ 63 int isreset; /* invoked as reset */ 64 int killchar; /* new kill character */ 65 int lines, columns; /* window size */ 66 67 int 68 main(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 /* Get the terminal name from the entry. */ 184 p = tcapbuf; 185 if (p != NULL && *p != ':') { 186 t = p; 187 if (p = strpbrk(p, "|:")) { 188 savech = *p; 189 *p = '\0'; 190 if ((ttype = strdup(t)) == NULL) 191 err("%s", strerror(errno)); 192 *p = savech; 193 } 194 } 195 196 if (noset) 197 (void)printf("%s\n", ttype); 198 else { 199 if (showterm) 200 (void)fprintf(stderr, "Terminal type is %s.\n", ttype); 201 /* 202 * If erase, kill and interrupt characters could have been 203 * modified and not -Q, display the changes. 204 */ 205 if (!quiet) { 206 report("Erase", VERASE, CERASE); 207 report("Kill", VKILL, CKILL); 208 report("Interrupt", VINTR, CINTR); 209 } 210 } 211 212 if (Sflag) { 213 (void)printf("%s ", ttype); 214 wrtermcap(tcapbuf); 215 } 216 217 if (sflag) { 218 /* 219 * Figure out what shell we're using. A hack, we look for an 220 * environmental variable SHELL ending in "csh". 221 */ 222 if ((p = getenv("SHELL")) && 223 !strcmp(p + strlen(p) - 3, "csh")) { 224 p = "set noglob;\nsetenv TERM %s;\nsetenv TERMCAP '"; 225 t = "';\nunset noglob;\n"; 226 } else { 227 p = "TERM=%s;\nTERMCAP='"; 228 t = "';\nexport TERMCAP TERM;\n"; 229 } 230 (void)printf(p, ttype); 231 wrtermcap(tcapbuf); 232 (void)printf(t); 233 } 234 235 exit(0); 236 } 237 238 /* 239 * Tell the user if a control key has been changed from the default value. 240 */ 241 void 242 report(name, which, def) 243 char *name; 244 int which; 245 u_int def; 246 { 247 u_int old, new; 248 char *bp, buf[1024]; 249 250 new = mode.c_cc[which]; 251 old = oldmode.c_cc[which]; 252 253 if (old == new && old == def) 254 return; 255 256 (void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to"); 257 258 bp = buf; 259 if (tgetstr("kb", &bp) && new == buf[0] && buf[1] == '\0') 260 (void)fprintf(stderr, "backspace.\n"); 261 else if (new == 0177) 262 (void)fprintf(stderr, "delete.\n"); 263 else if (new < 040) { 264 new ^= 0100; 265 (void)fprintf(stderr, "control-%c (^%c).\n", new, new); 266 } else 267 (void)fprintf(stderr, "%c.\n", new); 268 } 269 270 /* 271 * Convert the obsolete argument form into something that getopt can handle. 272 * This means that -e, -i and -k get default arguments supplied for them. 273 */ 274 void 275 obsolete(argv) 276 char *argv[]; 277 { 278 for (; *argv; ++argv) { 279 if (argv[0][0] != '-' || argv[1] && argv[1][0] != '-' || 280 argv[0][1] != 'e' && argv[0][1] != 'i' && 281 argv[0][1] != 'k' || argv[0][2] != '\0') 282 continue; 283 switch(argv[0][1]) { 284 case 'e': 285 argv[0] = "-e^H"; 286 break; 287 case 'i': 288 argv[0] = "-i^C"; 289 break; 290 case 'k': 291 argv[0] = "-k^U"; 292 break; 293 } 294 } 295 } 296 297 void 298 usage() 299 { 300 (void)fprintf(stderr, 301 "usage: tset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]\n"); 302 exit(1); 303 } 304