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 * $DragonFly: src/usr.bin/tset/tset.c,v 1.3 2003/10/04 20:36:53 hmp Exp $ 33 */ 34 35 #include <sys/types.h> 36 #include <sys/ioctl.h> 37 #include <ctype.h> 38 #include <err.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <unistd.h> 43 #include <termios.h> 44 #include "extern.h" 45 46 void obsolete(char *[]); 47 void report(const char *, int, u_int); 48 void usage(void); 49 50 struct termios mode, oldmode; 51 52 int erasech; /* new erase character */ 53 int intrchar; /* new interrupt character */ 54 int isreset; /* invoked as reset */ 55 int killch; /* new kill character */ 56 int Lines, Columns; /* window size */ 57 speed_t Ospeed; 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, sflag, showterm, usingupper; 66 char *p, *tcapbuf; 67 const char *ttype; 68 69 if (tcgetattr(STDERR_FILENO, &mode) < 0) 70 err(1, "standard error"); 71 72 oldmode = mode; 73 Ospeed = cfgetospeed(&mode); 74 75 if ((p = strrchr(*argv, '/'))) 76 ++p; 77 else 78 p = *argv; 79 usingupper = isupper(*p); 80 if (!strcasecmp(p, "reset")) { 81 isreset = 1; 82 reset_mode(); 83 } 84 85 obsolete(argv); 86 noinit = noset = quiet = Sflag = sflag = showterm = 0; 87 while ((ch = getopt(argc, argv, "-a:d:e:Ii:k:m:np:QSrs")) != -1) { 88 switch (ch) { 89 case '-': /* display term only */ 90 noset = 1; 91 break; 92 case 'a': /* OBSOLETE: map identifier to type */ 93 add_mapping("arpanet", optarg); 94 break; 95 case 'd': /* OBSOLETE: map identifier to type */ 96 add_mapping("dialup", optarg); 97 break; 98 case 'e': /* erase character */ 99 erasech = optarg[0] == '^' && optarg[1] != '\0' ? 100 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 101 optarg[0]; 102 break; 103 case 'I': /* no initialization strings */ 104 noinit = 1; 105 break; 106 case 'i': /* interrupt character */ 107 intrchar = optarg[0] == '^' && optarg[1] != '\0' ? 108 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 109 optarg[0]; 110 break; 111 case 'k': /* kill character */ 112 killch = optarg[0] == '^' && optarg[1] != '\0' ? 113 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 114 optarg[0]; 115 break; 116 case 'm': /* map identifier to type */ 117 add_mapping(NULL, optarg); 118 break; 119 case 'n': /* OBSOLETE: set new tty driver */ 120 break; 121 case 'p': /* OBSOLETE: map identifier to type */ 122 add_mapping("plugboard", optarg); 123 break; 124 case 'Q': /* don't output control key settings */ 125 quiet = 1; 126 break; 127 case 'S': /* output TERM/TERMCAP strings */ 128 Sflag = 1; 129 break; 130 case 'r': /* display term on stderr */ 131 showterm = 1; 132 break; 133 case 's': /* output TERM/TERMCAP strings */ 134 sflag = 1; 135 break; 136 case '?': 137 default: 138 usage(); 139 } 140 } 141 argc -= optind; 142 argv += optind; 143 144 if (argc > 1) 145 usage(); 146 147 ttype = get_termcap_entry(*argv, &tcapbuf); 148 149 if (!noset) { 150 Columns = tgetnum("co"); 151 Lines = tgetnum("li"); 152 153 #ifdef TIOCGWINSZ 154 /* Set window size */ 155 (void)ioctl(STDERR_FILENO, TIOCGWINSZ, &win); 156 if (win.ws_row == 0 && win.ws_col == 0 && 157 Lines > 0 && Columns > 0) { 158 win.ws_row = Lines; 159 win.ws_col = Columns; 160 (void)ioctl(STDERR_FILENO, TIOCSWINSZ, &win); 161 } 162 #endif 163 set_control_chars(); 164 set_conversions(usingupper); 165 166 if (!noinit) 167 set_init(); 168 169 /* Set the modes if they've changed. */ 170 if (memcmp(&mode, &oldmode, sizeof(mode))) 171 tcsetattr(STDERR_FILENO, TCSADRAIN, &mode); 172 } 173 174 if (noset) 175 (void)printf("%s\n", ttype); 176 else { 177 if (showterm) 178 (void)fprintf(stderr, "Terminal type is %s.\n", ttype); 179 /* 180 * If erase, kill and interrupt characters could have been 181 * modified and not -Q, display the changes. 182 */ 183 if (!quiet) { 184 report("Erase", VERASE, CERASE); 185 report("Kill", VKILL, CKILL); 186 report("Interrupt", VINTR, CINTR); 187 } 188 } 189 190 if (Sflag) { 191 (void)printf("%s ", ttype); 192 if (strlen(tcapbuf) > 0) 193 wrtermcap(tcapbuf); 194 } 195 196 if (sflag) { 197 /* 198 * Figure out what shell we're using. A hack, we look for an 199 * environmental variable SHELL ending in "csh". 200 */ 201 if ((p = getenv("SHELL")) && 202 !strcmp(p + strlen(p) - 3, "csh")) { 203 printf("set noglob;\nsetenv TERM %s;\n", ttype); 204 if (strlen(tcapbuf) > 0) { 205 printf("setenv TERMCAP '"); 206 wrtermcap(tcapbuf); 207 printf("';\n"); 208 } 209 printf("unset noglob;\n"); 210 } else { 211 printf("TERM=%s;\n", ttype); 212 if (strlen(tcapbuf) > 0) { 213 printf("TERMCAP='"); 214 wrtermcap(tcapbuf); 215 printf("';\nexport TERMCAP;\n"); 216 } 217 printf("export TERM;\n"); 218 } 219 } 220 221 exit(0); 222 } 223 224 /* 225 * Tell the user if a control key has been changed from the default value. 226 */ 227 void 228 report(const char *name, int which, u_int def) 229 { 230 u_int old, new; 231 232 new = mode.c_cc[which]; 233 old = oldmode.c_cc[which]; 234 235 if (old == new && old == def) 236 return; 237 238 (void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to"); 239 240 if (new == 010) 241 (void)fprintf(stderr, "backspace.\n"); 242 else if (new == 0177) 243 (void)fprintf(stderr, "delete.\n"); 244 else if (new < 040) { 245 new ^= 0100; 246 (void)fprintf(stderr, "control-%c (^%c).\n", new, new); 247 } else 248 (void)fprintf(stderr, "%c.\n", new); 249 } 250 251 /* 252 * Convert the obsolete argument form into something that getopt can handle. 253 * This means that -e, -i and -k get default arguments supplied for them. 254 */ 255 void 256 obsolete(char **argv) 257 { 258 for (; *argv; ++argv) { 259 if (argv[0][0] != '-' || (argv[1] && argv[1][0] != '-') || 260 (argv[0][1] != 'e' && argv[0][1] != 'i' && argv[0][1] != 'k') || 261 argv[0][2] != '\0') 262 continue; 263 switch(argv[0][1]) { 264 case 'e': 265 argv[0] = strdup("-e^H"); 266 break; 267 case 'i': 268 argv[0] = strdup("-i^C"); 269 break; 270 case 'k': 271 argv[0] = strdup("-k^U"); 272 break; 273 } 274 } 275 } 276 277 void 278 usage(void) 279 { 280 (void)fprintf(stderr, "%s\n%s\n", 281 "usage: tset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]", 282 " reset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]"); 283 exit(1); 284 } 285 286