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. 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 * @(#) Copyright (c) 1980, 1991, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)tset.c 8.1 (Berkeley) 6/9/93 35 * $FreeBSD: src/usr.bin/tset/tset.c,v 1.14.2.1 2000/11/12 07:48:29 dg Exp $ 36 * $DragonFly: src/usr.bin/tset/tset.c,v 1.2 2003/06/17 04:29:33 dillon Exp $ 37 */ 38 39 #include <sys/types.h> 40 #include <sys/ioctl.h> 41 #include <ctype.h> 42 #include <err.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <unistd.h> 47 #include <termios.h> 48 #include "extern.h" 49 50 void obsolete __P((char *[])); 51 void report __P((char *, int, u_int)); 52 void usage __P((void)); 53 54 struct termios mode, oldmode; 55 56 int erasech; /* new erase character */ 57 int intrchar; /* new interrupt character */ 58 int isreset; /* invoked as reset */ 59 int killch; /* new kill character */ 60 int Lines, Columns; /* window size */ 61 speed_t Ospeed; 62 63 int 64 main(argc, argv) 65 int argc; 66 char *argv[]; 67 { 68 #ifdef TIOCGWINSZ 69 struct winsize win; 70 #endif 71 int ch, noinit, noset, quiet, Sflag, sflag, showterm, usingupper; 72 char *p, *t, *tcapbuf, *ttype; 73 74 if (tcgetattr(STDERR_FILENO, &mode) < 0) 75 err(1, "standard error"); 76 77 oldmode = mode; 78 Ospeed = cfgetospeed(&mode); 79 80 if ((p = strrchr(*argv, '/'))) 81 ++p; 82 else 83 p = *argv; 84 usingupper = isupper(*p); 85 if (!strcasecmp(p, "reset")) { 86 isreset = 1; 87 reset_mode(); 88 } 89 90 obsolete(argv); 91 noinit = noset = quiet = Sflag = sflag = showterm = 0; 92 while ((ch = getopt(argc, argv, "-a:d:e:Ii:k:m:np:QSrs")) != -1) { 93 switch (ch) { 94 case '-': /* display term only */ 95 noset = 1; 96 break; 97 case 'a': /* OBSOLETE: map identifier to type */ 98 add_mapping("arpanet", optarg); 99 break; 100 case 'd': /* OBSOLETE: map identifier to type */ 101 add_mapping("dialup", optarg); 102 break; 103 case 'e': /* erase character */ 104 erasech = optarg[0] == '^' && optarg[1] != '\0' ? 105 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 106 optarg[0]; 107 break; 108 case 'I': /* no initialization strings */ 109 noinit = 1; 110 break; 111 case 'i': /* interrupt character */ 112 intrchar = optarg[0] == '^' && optarg[1] != '\0' ? 113 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 114 optarg[0]; 115 break; 116 case 'k': /* kill character */ 117 killch = optarg[0] == '^' && optarg[1] != '\0' ? 118 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 119 optarg[0]; 120 break; 121 case 'm': /* map identifier to type */ 122 add_mapping(NULL, optarg); 123 break; 124 case 'n': /* OBSOLETE: set new tty driver */ 125 break; 126 case 'p': /* OBSOLETE: map identifier to type */ 127 add_mapping("plugboard", optarg); 128 break; 129 case 'Q': /* don't output control key settings */ 130 quiet = 1; 131 break; 132 case 'S': /* output TERM/TERMCAP strings */ 133 Sflag = 1; 134 break; 135 case 'r': /* display term on stderr */ 136 showterm = 1; 137 break; 138 case 's': /* output TERM/TERMCAP strings */ 139 sflag = 1; 140 break; 141 case '?': 142 default: 143 usage(); 144 } 145 } 146 argc -= optind; 147 argv += optind; 148 149 if (argc > 1) 150 usage(); 151 152 ttype = get_termcap_entry(*argv, &tcapbuf); 153 154 if (!noset) { 155 Columns = tgetnum("co"); 156 Lines = tgetnum("li"); 157 158 #ifdef TIOCGWINSZ 159 /* Set window size */ 160 (void)ioctl(STDERR_FILENO, TIOCGWINSZ, &win); 161 if (win.ws_row == 0 && win.ws_col == 0 && 162 Lines > 0 && Columns > 0) { 163 win.ws_row = Lines; 164 win.ws_col = Columns; 165 (void)ioctl(STDERR_FILENO, TIOCSWINSZ, &win); 166 } 167 #endif 168 set_control_chars(); 169 set_conversions(usingupper); 170 171 if (!noinit) 172 set_init(); 173 174 /* Set the modes if they've changed. */ 175 if (memcmp(&mode, &oldmode, sizeof(mode))) 176 tcsetattr(STDERR_FILENO, TCSADRAIN, &mode); 177 } 178 179 if (noset) 180 (void)printf("%s\n", ttype); 181 else { 182 if (showterm) 183 (void)fprintf(stderr, "Terminal type is %s.\n", ttype); 184 /* 185 * If erase, kill and interrupt characters could have been 186 * modified and not -Q, display the changes. 187 */ 188 if (!quiet) { 189 report("Erase", VERASE, CERASE); 190 report("Kill", VKILL, CKILL); 191 report("Interrupt", VINTR, CINTR); 192 } 193 } 194 195 if (Sflag) { 196 (void)printf("%s ", ttype); 197 if (strlen(tcapbuf) > 0) 198 wrtermcap(tcapbuf); 199 } 200 201 if (sflag) { 202 /* 203 * Figure out what shell we're using. A hack, we look for an 204 * environmental variable SHELL ending in "csh". 205 */ 206 if ((p = getenv("SHELL")) && 207 !strcmp(p + strlen(p) - 3, "csh")) { 208 printf("set noglob;\nsetenv TERM %s;\n", ttype); 209 if (strlen(tcapbuf) > 0) { 210 printf("setenv TERMCAP '"); 211 wrtermcap(tcapbuf); 212 printf("';\n"); 213 } 214 printf("unset noglob;\n"); 215 } else { 216 printf("TERM=%s;\n", ttype); 217 if (strlen(tcapbuf) > 0) { 218 printf("TERMCAP='"); 219 wrtermcap(tcapbuf); 220 printf("';\nexport TERMCAP;\n"); 221 } 222 printf("export TERM;\n"); 223 } 224 } 225 226 exit(0); 227 } 228 229 /* 230 * Tell the user if a control key has been changed from the default value. 231 */ 232 void 233 report(name, which, def) 234 char *name; 235 int which; 236 u_int def; 237 { 238 u_int old, new; 239 240 new = mode.c_cc[which]; 241 old = oldmode.c_cc[which]; 242 243 if (old == new && old == def) 244 return; 245 246 (void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to"); 247 248 if (new == 010) 249 (void)fprintf(stderr, "backspace.\n"); 250 else if (new == 0177) 251 (void)fprintf(stderr, "delete.\n"); 252 else if (new < 040) { 253 new ^= 0100; 254 (void)fprintf(stderr, "control-%c (^%c).\n", new, new); 255 } else 256 (void)fprintf(stderr, "%c.\n", new); 257 } 258 259 /* 260 * Convert the obsolete argument form into something that getopt can handle. 261 * This means that -e, -i and -k get default arguments supplied for them. 262 */ 263 void 264 obsolete(argv) 265 char *argv[]; 266 { 267 for (; *argv; ++argv) { 268 if (argv[0][0] != '-' || (argv[1] && argv[1][0] != '-') || 269 (argv[0][1] != 'e' && argv[0][1] != 'i' && argv[0][1] != 'k') || 270 argv[0][2] != '\0') 271 continue; 272 switch(argv[0][1]) { 273 case 'e': 274 argv[0] = "-e^H"; 275 break; 276 case 'i': 277 argv[0] = "-i^C"; 278 break; 279 case 'k': 280 argv[0] = "-k^U"; 281 break; 282 } 283 } 284 } 285 286 void 287 usage() 288 { 289 (void)fprintf(stderr, "%s\n%s\n", 290 "usage: tset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]", 291 " reset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]"); 292 exit(1); 293 } 294 295