1 /* $NetBSD: tset.c,v 1.20 2011/09/06 18:34:12 joerg 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. 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 __COPYRIGHT("@(#) Copyright (c) 1980, 1991, 1993\ 34 The Regents of the University of California. All rights reserved."); 35 __RCSID("$NetBSD: tset.c,v 1.20 2011/09/06 18:34:12 joerg Exp $"); 36 37 #include <sys/types.h> 38 #include <sys/ioctl.h> 39 #include <ctype.h> 40 #include <err.h> 41 #include <errno.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <term.h> 46 #include <termios.h> 47 #include <unistd.h> 48 #include "extern.h" 49 50 static void obsolete(char *[]); 51 static void report(const char *, int, u_int); 52 __dead static void usage(void); 53 54 struct termios mode, oldmode; 55 56 int isreset; /* invoked as reset */ 57 int nlines, ncolumns; /* window size */ 58 59 int 60 main(int argc, char *argv[]) 61 { 62 #ifdef TIOCGWINSZ 63 struct winsize win; 64 #endif 65 int ch, noinit, noset, quiet, sflag, showterm; 66 int erasechar = 0, intrchar = 0, killchar = 0; 67 int usingupper; 68 char *p; 69 const char *k1, *k2; 70 const char *ttype; 71 72 if (tcgetattr(STDERR_FILENO, &mode) < 0) 73 err(1, "standard error"); 74 75 oldmode = mode; 76 ospeed = cfgetospeed(&mode); 77 78 if ((p = strrchr(*argv, '/')) != NULL) 79 ++p; 80 else 81 p = *argv; 82 usingupper = isupper((unsigned char)*p); 83 if (!strcasecmp(p, "reset")) { 84 isreset = 1; 85 reset_mode(); 86 } 87 88 obsolete(argv); 89 noinit = noset = quiet = sflag = showterm = 0; 90 while ((ch = getopt(argc, argv, "-a:d:e:EIi:k:m:np:QSrs")) != -1) { 91 switch (ch) { 92 case '-': /* display term only */ 93 noset = 1; 94 break; 95 case 'a': /* OBSOLETE: map identifier to type */ 96 add_mapping("arpanet", optarg); 97 break; 98 case 'd': /* OBSOLETE: map identifier to type */ 99 add_mapping("dialup", optarg); 100 break; 101 case 'e': /* erase character */ 102 erasechar = optarg[0] == '^' && optarg[1] != '\0' ? 103 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 104 optarg[0]; 105 break; 106 case 'E': /* -E does not make sense for terminfo 107 should this be noisy? */ 108 break; 109 case 'I': /* no initialization strings */ 110 noinit = 1; 111 break; 112 case 'i': /* interrupt character */ 113 intrchar = optarg[0] == '^' && optarg[1] != '\0' ? 114 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 115 optarg[0]; 116 break; 117 case 'k': /* kill character */ 118 killchar = optarg[0] == '^' && optarg[1] != '\0' ? 119 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 120 optarg[0]; 121 break; 122 case 'm': /* map identifier to type */ 123 add_mapping(NULL, optarg); 124 break; 125 case 'n': /* OBSOLETE: set new tty driver */ 126 break; 127 case 'p': /* OBSOLETE: map identifier to type */ 128 add_mapping("plugboard", optarg); 129 break; 130 case 'Q': /* don't output control key settings */ 131 quiet = 1; 132 break; 133 case 'S': /* -S does not make sense for terminfo 134 should this be noisy? */ 135 break; 136 case 'r': /* display term on stderr */ 137 showterm = 1; 138 break; 139 case 's': /* output TERM string */ 140 sflag = 1; 141 break; 142 case '?': 143 default: 144 usage(); 145 } 146 } 147 argc -= optind; 148 argv += optind; 149 150 if (argc > 1) 151 usage(); 152 153 ttype = get_terminfo_entry(*argv); 154 155 if (!noset) { 156 ncolumns = columns; 157 nlines = lines; 158 159 #ifdef TIOCGWINSZ 160 /* Set window size */ 161 (void)ioctl(STDERR_FILENO, TIOCGWINSZ, &win); 162 if (win.ws_row > 0 && win.ws_col > 0) { 163 nlines = win.ws_row; 164 ncolumns = win.ws_col; 165 } else if (win.ws_row == 0 && win.ws_col == 0 && 166 nlines > 0 && columns > 0) { 167 win.ws_row = nlines; 168 win.ws_col = ncolumns; 169 (void)ioctl(STDERR_FILENO, TIOCSWINSZ, &win); 170 } 171 #endif 172 set_control_chars(erasechar, intrchar, killchar); 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 if (noset) 184 (void)printf("%s\n", ttype); 185 else { 186 if (showterm) 187 (void)fprintf(stderr, "Terminal type is %s.\n", ttype); 188 /* 189 * If erase, kill and interrupt characters could have been 190 * modified and not -Q, display the changes. 191 */ 192 if (!quiet) { 193 report("Erase", VERASE, CERASE); 194 report("Kill", VKILL, CKILL); 195 report("Interrupt", VINTR, CINTR); 196 } 197 } 198 199 if (sflag) { 200 /* 201 * Figure out what shell we're using. A hack, we look for an 202 * environmental variable SHELL ending in "csh". 203 */ 204 if ((p = getenv("SHELL")) && 205 !strcmp(p + strlen(p) - 3, "csh")) { 206 k1 = "set noglob;\nsetenv TERM "; 207 k2 = ";\nunset noglob;\n"; 208 } else { 209 k1 = "TERM="; 210 k2 = ";\nexport TERM;\n"; 211 } 212 (void)printf("%s%s%s", k1, ttype, k2); 213 } 214 215 exit(0); 216 } 217 218 /* 219 * Tell the user if a control key has been changed from the default value. 220 */ 221 static void 222 report(const char *name, int which, u_int def) 223 { 224 u_int old, new; 225 226 new = mode.c_cc[which]; 227 old = oldmode.c_cc[which]; 228 229 if (old == new && old == def) 230 return; 231 232 (void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to"); 233 234 if (key_backspace != NULL && 235 new == (unsigned int)key_backspace[0] && 236 key_backspace[1] == '\0') 237 (void)fprintf(stderr, "backspace.\n"); 238 else if (new == 0177) 239 (void)fprintf(stderr, "delete.\n"); 240 else if (new < 040) { 241 new ^= 0100; 242 (void)fprintf(stderr, "control-%c (^%c).\n", new, new); 243 } else if (new == _POSIX_VDISABLE) 244 (void)fprintf(stderr, "<undef>.\n"); 245 else 246 (void)fprintf(stderr, "%c.\n", new); 247 } 248 249 /* 250 * Convert the obsolete argument form into something that getopt can handle. 251 * This means that -e, -i and -k get default arguments supplied for them. 252 */ 253 void 254 obsolete(char *argv[]) 255 { 256 static char earg[5] = { '-', 'e', '^', 'H', '\0' }; 257 static char iarg[5] = { '-', 'i', '^', 'C', '\0' }; 258 static char karg[5] = { '-', 'k', '^', 'U', '\0' }; 259 260 for (; *argv; ++argv) { 261 if (argv[0][0] != '-' || (argv[1] && argv[1][0] != '-') || 262 (argv[0][1] != 'e' && argv[0][1] != 'i' && 263 argv[0][1] != 'k') || argv[0][2] != '\0') 264 continue; 265 switch(argv[0][1]) { 266 case 'e': 267 argv[0] = earg; 268 break; 269 case 'i': 270 argv[0] = iarg; 271 break; 272 case 'k': 273 argv[0] = karg; 274 break; 275 } 276 } 277 } 278 279 static void 280 usage(void) 281 { 282 (void)fprintf(stderr, 283 "usage: %s [-EIQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]\n", 284 getprogname()); 285 exit(1); 286 } 287
Indexes created Sat Sep 20 22:09:52 GMT 2025