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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#) Copyright (c) 1980, 1991, 1993 The Regents of the University of California. All rights reserved. 30 * @(#)tset.c 8.1 (Berkeley) 6/9/93 31 * $FreeBSD: src/usr.bin/tset/tset.c,v 1.14.2.1 2000/11/12 07:48:29 dg Exp $ 32 */ 33 34 #include <sys/types.h> 35 #include <sys/ioctl.h> 36 #include <ctype.h> 37 #include <err.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <string.h> 41 #include <unistd.h> 42 #include <termios.h> 43 #include "extern.h" 44 45 void obsolete(char *[]); 46 void report(const char *, int, u_int); 47 void usage(void) __dead2; 48 49 struct termios mode, oldmode; 50 51 int erasech; /* new erase character */ 52 int intrchar; /* new interrupt character */ 53 int isreset; /* invoked as reset */ 54 int killch; /* new kill character */ 55 int Lines, Columns; /* window size */ 56 speed_t Ospeed; 57 58 int 59 main(int argc, char **argv) 60 { 61 #ifdef TIOCGWINSZ 62 struct winsize win; 63 #endif 64 int ch, noinit, noset, quiet, Sflag, sflag, showterm, usingupper; 65 char *p, *tcapbuf; 66 const char *ttype; 67 68 if (tcgetattr(STDERR_FILENO, &mode) < 0) 69 err(1, "standard error"); 70 71 oldmode = mode; 72 Ospeed = cfgetospeed(&mode); 73 74 if ((p = strrchr(*argv, '/'))) 75 ++p; 76 else 77 p = *argv; 78 usingupper = isupper(*p); 79 if (!strcasecmp(p, "reset")) { 80 isreset = 1; 81 reset_mode(); 82 } 83 84 obsolete(argv); 85 noinit = noset = quiet = Sflag = sflag = showterm = 0; 86 while ((ch = getopt(argc, argv, "-a:d:e:Ii:k:m:np:QSrs")) != -1) { 87 switch (ch) { 88 case '-': /* display term only */ 89 noset = 1; 90 break; 91 case 'a': /* OBSOLETE: map identifier to type */ 92 add_mapping("arpanet", optarg); 93 break; 94 case 'd': /* OBSOLETE: map identifier to type */ 95 add_mapping("dialup", optarg); 96 break; 97 case 'e': /* erase character */ 98 erasech = optarg[0] == '^' && optarg[1] != '\0' ? 99 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 100 optarg[0]; 101 break; 102 case 'I': /* no initialization strings */ 103 noinit = 1; 104 break; 105 case 'i': /* interrupt character */ 106 intrchar = optarg[0] == '^' && optarg[1] != '\0' ? 107 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 108 optarg[0]; 109 break; 110 case 'k': /* kill character */ 111 killch = optarg[0] == '^' && optarg[1] != '\0' ? 112 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 113 optarg[0]; 114 break; 115 case 'm': /* map identifier to type */ 116 add_mapping(NULL, optarg); 117 break; 118 case 'n': /* OBSOLETE: set new tty driver */ 119 break; 120 case 'p': /* OBSOLETE: map identifier to type */ 121 add_mapping("plugboard", optarg); 122 break; 123 case 'Q': /* don't output control key settings */ 124 quiet = 1; 125 break; 126 case 'S': /* output TERM/TERMCAP strings */ 127 Sflag = 1; 128 break; 129 case 'r': /* display term on stderr */ 130 showterm = 1; 131 break; 132 case 's': /* output TERM/TERMCAP strings */ 133 sflag = 1; 134 break; 135 case '?': 136 default: 137 usage(); 138 } 139 } 140 argc -= optind; 141 argv += optind; 142 143 if (argc > 1) 144 usage(); 145 146 ttype = get_termcap_entry(*argv, &tcapbuf); 147 148 if (!noset) { 149 Columns = tgetnum("co"); 150 Lines = tgetnum("li"); 151 152 #ifdef TIOCGWINSZ 153 /* Set window size */ 154 (void)ioctl(STDERR_FILENO, TIOCGWINSZ, &win); 155 if (win.ws_row == 0 && win.ws_col == 0 && 156 Lines > 0 && Columns > 0) { 157 win.ws_row = Lines; 158 win.ws_col = Columns; 159 (void)ioctl(STDERR_FILENO, TIOCSWINSZ, &win); 160 } 161 #endif 162 set_control_chars(); 163 set_conversions(usingupper); 164 165 if (!noinit) 166 set_init(); 167 168 /* Set the modes if they've changed. */ 169 if (memcmp(&mode, &oldmode, sizeof(mode))) 170 tcsetattr(STDERR_FILENO, TCSADRAIN, &mode); 171 } 172 173 if (noset) 174 (void)printf("%s\n", ttype); 175 else { 176 if (showterm) 177 (void)fprintf(stderr, "Terminal type is %s.\n", ttype); 178 /* 179 * If erase, kill and interrupt characters could have been 180 * modified and not -Q, display the changes. 181 */ 182 if (!quiet) { 183 report("Erase", VERASE, CERASE); 184 report("Kill", VKILL, CKILL); 185 report("Interrupt", VINTR, CINTR); 186 } 187 } 188 189 if (Sflag) { 190 (void)printf("%s ", ttype); 191 if (strlen(tcapbuf) > 0) 192 wrtermcap(tcapbuf); 193 } 194 195 if (sflag) { 196 /* 197 * Figure out what shell we're using. A hack, we look for an 198 * environmental variable SHELL ending in "csh". 199 */ 200 if ((p = getenv("SHELL")) && 201 !strcmp(p + strlen(p) - 3, "csh")) { 202 printf("set noglob;\nsetenv TERM %s;\n", ttype); 203 if (strlen(tcapbuf) > 0) { 204 printf("setenv TERMCAP '"); 205 wrtermcap(tcapbuf); 206 printf("';\n"); 207 } 208 printf("unset noglob;\n"); 209 } else { 210 printf("TERM=%s;\n", ttype); 211 if (strlen(tcapbuf) > 0) { 212 printf("TERMCAP='"); 213 wrtermcap(tcapbuf); 214 printf("';\nexport TERMCAP;\n"); 215 } 216 printf("export TERM;\n"); 217 } 218 } 219 220 exit(0); 221 } 222 223 /* 224 * Tell the user if a control key has been changed from the default value. 225 */ 226 void 227 report(const char *name, int which, u_int def) 228 { 229 u_int old, new; 230 231 new = mode.c_cc[which]; 232 old = oldmode.c_cc[which]; 233 234 if (old == new && old == def) 235 return; 236 237 (void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to"); 238 239 if (new == 010) 240 (void)fprintf(stderr, "backspace.\n"); 241 else if (new == 0177) 242 (void)fprintf(stderr, "delete.\n"); 243 else if (new < 040) { 244 new ^= 0100; 245 (void)fprintf(stderr, "control-%c (^%c).\n", new, new); 246 } else 247 (void)fprintf(stderr, "%c.\n", new); 248 } 249 250 /* 251 * Convert the obsolete argument form into something that getopt can handle. 252 * This means that -e, -i and -k get default arguments supplied for them. 253 */ 254 void 255 obsolete(char **argv) 256 { 257 for (; *argv; ++argv) { 258 if (argv[0][0] != '-' || (argv[1] && argv[1][0] != '-') || 259 (argv[0][1] != 'e' && argv[0][1] != 'i' && argv[0][1] != 'k') || 260 argv[0][2] != '\0') 261 continue; 262 switch(argv[0][1]) { 263 case 'e': 264 argv[0] = strdup("-e^H"); 265 break; 266 case 'i': 267 argv[0] = strdup("-i^C"); 268 break; 269 case 'k': 270 argv[0] = strdup("-k^U"); 271 break; 272 } 273 } 274 } 275 276 void 277 usage(void) 278 { 279 (void)fprintf(stderr, "%s\n%s\n", 280 "usage: tset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]", 281 " reset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]"); 282 exit(1); 283 } 284 285