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 1.3 2003/10/04 20:36:53 hmp 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(char *[]); 51 void report(const char *, int, u_int); 52 void usage(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(int argc, char **argv) 65 { 66 #ifdef TIOCGWINSZ 67 struct winsize win; 68 #endif 69 int ch, noinit, noset, quiet, Sflag, sflag, showterm, usingupper; 70 char *p, *tcapbuf; 71 const char *ttype; 72 73 if (tcgetattr(STDERR_FILENO, &mode) < 0) 74 err(1, "standard error"); 75 76 oldmode = mode; 77 Ospeed = cfgetospeed(&mode); 78 79 if ((p = strrchr(*argv, '/'))) 80 ++p; 81 else 82 p = *argv; 83 usingupper = isupper(*p); 84 if (!strcasecmp(p, "reset")) { 85 isreset = 1; 86 reset_mode(); 87 } 88 89 obsolete(argv); 90 noinit = noset = quiet = Sflag = sflag = showterm = 0; 91 while ((ch = getopt(argc, argv, "-a:d:e:Ii:k:m:np:QSrs")) != -1) { 92 switch (ch) { 93 case '-': /* display term only */ 94 noset = 1; 95 break; 96 case 'a': /* OBSOLETE: map identifier to type */ 97 add_mapping("arpanet", optarg); 98 break; 99 case 'd': /* OBSOLETE: map identifier to type */ 100 add_mapping("dialup", optarg); 101 break; 102 case 'e': /* erase character */ 103 erasech = optarg[0] == '^' && optarg[1] != '\0' ? 104 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 105 optarg[0]; 106 break; 107 case 'I': /* no initialization strings */ 108 noinit = 1; 109 break; 110 case 'i': /* interrupt character */ 111 intrchar = optarg[0] == '^' && optarg[1] != '\0' ? 112 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 113 optarg[0]; 114 break; 115 case 'k': /* kill character */ 116 killch = optarg[0] == '^' && optarg[1] != '\0' ? 117 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 118 optarg[0]; 119 break; 120 case 'm': /* map identifier to type */ 121 add_mapping(NULL, optarg); 122 break; 123 case 'n': /* OBSOLETE: set new tty driver */ 124 break; 125 case 'p': /* OBSOLETE: map identifier to type */ 126 add_mapping("plugboard", optarg); 127 break; 128 case 'Q': /* don't output control key settings */ 129 quiet = 1; 130 break; 131 case 'S': /* output TERM/TERMCAP strings */ 132 Sflag = 1; 133 break; 134 case 'r': /* display term on stderr */ 135 showterm = 1; 136 break; 137 case 's': /* output TERM/TERMCAP strings */ 138 sflag = 1; 139 break; 140 case '?': 141 default: 142 usage(); 143 } 144 } 145 argc -= optind; 146 argv += optind; 147 148 if (argc > 1) 149 usage(); 150 151 ttype = get_termcap_entry(*argv, &tcapbuf); 152 153 if (!noset) { 154 Columns = tgetnum("co"); 155 Lines = tgetnum("li"); 156 157 #ifdef TIOCGWINSZ 158 /* Set window size */ 159 (void)ioctl(STDERR_FILENO, TIOCGWINSZ, &win); 160 if (win.ws_row == 0 && win.ws_col == 0 && 161 Lines > 0 && Columns > 0) { 162 win.ws_row = Lines; 163 win.ws_col = Columns; 164 (void)ioctl(STDERR_FILENO, TIOCSWINSZ, &win); 165 } 166 #endif 167 set_control_chars(); 168 set_conversions(usingupper); 169 170 if (!noinit) 171 set_init(); 172 173 /* Set the modes if they've changed. */ 174 if (memcmp(&mode, &oldmode, sizeof(mode))) 175 tcsetattr(STDERR_FILENO, TCSADRAIN, &mode); 176 } 177 178 if (noset) 179 (void)printf("%s\n", ttype); 180 else { 181 if (showterm) 182 (void)fprintf(stderr, "Terminal type is %s.\n", ttype); 183 /* 184 * If erase, kill and interrupt characters could have been 185 * modified and not -Q, display the changes. 186 */ 187 if (!quiet) { 188 report("Erase", VERASE, CERASE); 189 report("Kill", VKILL, CKILL); 190 report("Interrupt", VINTR, CINTR); 191 } 192 } 193 194 if (Sflag) { 195 (void)printf("%s ", ttype); 196 if (strlen(tcapbuf) > 0) 197 wrtermcap(tcapbuf); 198 } 199 200 if (sflag) { 201 /* 202 * Figure out what shell we're using. A hack, we look for an 203 * environmental variable SHELL ending in "csh". 204 */ 205 if ((p = getenv("SHELL")) && 206 !strcmp(p + strlen(p) - 3, "csh")) { 207 printf("set noglob;\nsetenv TERM %s;\n", ttype); 208 if (strlen(tcapbuf) > 0) { 209 printf("setenv TERMCAP '"); 210 wrtermcap(tcapbuf); 211 printf("';\n"); 212 } 213 printf("unset noglob;\n"); 214 } else { 215 printf("TERM=%s;\n", ttype); 216 if (strlen(tcapbuf) > 0) { 217 printf("TERMCAP='"); 218 wrtermcap(tcapbuf); 219 printf("';\nexport TERMCAP;\n"); 220 } 221 printf("export TERM;\n"); 222 } 223 } 224 225 exit(0); 226 } 227 228 /* 229 * Tell the user if a control key has been changed from the default value. 230 */ 231 void 232 report(const char *name, int which, u_int def) 233 { 234 u_int old, new; 235 236 new = mode.c_cc[which]; 237 old = oldmode.c_cc[which]; 238 239 if (old == new && old == def) 240 return; 241 242 (void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to"); 243 244 if (new == 010) 245 (void)fprintf(stderr, "backspace.\n"); 246 else if (new == 0177) 247 (void)fprintf(stderr, "delete.\n"); 248 else if (new < 040) { 249 new ^= 0100; 250 (void)fprintf(stderr, "control-%c (^%c).\n", new, new); 251 } else 252 (void)fprintf(stderr, "%c.\n", new); 253 } 254 255 /* 256 * Convert the obsolete argument form into something that getopt can handle. 257 * This means that -e, -i and -k get default arguments supplied for them. 258 */ 259 void 260 obsolete(char **argv) 261 { 262 for (; *argv; ++argv) { 263 if (argv[0][0] != '-' || (argv[1] && argv[1][0] != '-') || 264 (argv[0][1] != 'e' && argv[0][1] != 'i' && argv[0][1] != 'k') || 265 argv[0][2] != '\0') 266 continue; 267 switch(argv[0][1]) { 268 case 'e': 269 argv[0] = strdup("-e^H"); 270 break; 271 case 'i': 272 argv[0] = strdup("-i^C"); 273 break; 274 case 'k': 275 argv[0] = strdup("-k^U"); 276 break; 277 } 278 } 279 } 280 281 void 282 usage(void) 283 { 284 (void)fprintf(stderr, "%s\n%s\n", 285 "usage: tset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]", 286 " reset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]"); 287 exit(1); 288 } 289 290