1 /****************************************************************************
2 * Copyright (c) 1998-2015,2016 Free Software Foundation, Inc. *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 * and: Thomas E. Dickey 1996-on *
33 ****************************************************************************/
37 * The initial adaptation from 4.4BSD Lite sources in September 1995 used 686
38 * lines from that version, and made changes/additions for 150 lines. There
39 * was no reformatting, so with/without ignoring whitespace, the amount of
42 * Comparing with current (2009) source, excluding this comment:
43 * a) 209 lines match identically to the 4.4BSD Lite sources, with 771 lines
45 * a) Ignoring whitespace, the current version still uses 516 lines from the
46 * 4.4BSD Lite sources, with 402 lines changed/added.
48 * Raymond's original comment on this follows...
52 * tset.c - terminal initialization utility
54 * This code was mostly swiped from 4.4BSD tset, with some obsolescent
55 * cruft removed and substantial portions rewritten. A Regents of the
56 * University of California copyright applies to some portions of the
57 * code, and is reproduced below:
60 * Copyright (c) 1980, 1991, 1993
61 * The Regents of the University of California. All rights reserved.
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
66 * 1. Redistributions of source code must retain the above copyright
67 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in the
70 * documentation and/or other materials provided with the distribution.
71 * 3. Neither the name of the University nor the names of its contributors
72 * may be used to endorse or promote products derived from this software
73 * without specific prior written permission.
75 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
76 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
77 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
78 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
79 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
80 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
81 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
82 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
83 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
84 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
88 #include <reset_cmd.h>
90 #include <transform.h>
92 #if HAVE_GETTTYNAM && HAVE_TTYENT_H
96 char *ttyname(int fd);
99 MODULE_ID("$Id: tset.c,v 1.110 2016/08/27 18:06:47 tom Exp $")
102 extern char **environ;
105 const char *_nc_progname = "tset";
107 #define LOWERCASE(c) ((isalpha(UChar(c)) && isupper(UChar(c))) ? tolower(UChar(c)) : (c))
110 CaselessCmp(const char *a, const char *b)
111 { /* strcasecmp isn't portable */
113 int cmp = LOWERCASE(*a) - LOWERCASE(*b);
118 return LOWERCASE(*a) - LOWERCASE(*b);
124 restore_tty_settings();
125 (void) fprintf(stderr, "\n");
127 ExitProgram(EXIT_FAILURE);
132 err(const char *fmt,...)
136 (void) fprintf(stderr, "%s: ", _nc_progname);
137 (void) vfprintf(stderr, fmt, ap);
144 failed(const char *msg)
147 size_t len = strlen(_nc_progname) + 2;
149 if ((int) len < (int) sizeof(temp) - 12) {
150 _nc_STRCPY(temp, _nc_progname, sizeof(temp));
151 _nc_STRCAT(temp, ": ", sizeof(temp));
153 _nc_STRCPY(temp, "tset: ", sizeof(temp));
155 perror(strncat(temp, msg, sizeof(temp) - strlen(temp) - 2));
160 /* Prompt the user for a terminal type. */
162 askuser(const char *dflt)
164 static char answer[256];
167 /* We can get recalled; if so, don't continue uselessly. */
169 if (feof(stdin) || ferror(stdin)) {
170 (void) fprintf(stderr, "\n");
176 (void) fprintf(stderr, "Terminal type? [%s] ", dflt);
178 (void) fprintf(stderr, "Terminal type? ");
179 (void) fflush(stderr);
181 if (fgets(answer, sizeof(answer), stdin) == 0) {
189 if ((p = strchr(answer, '\n')) != 0)
198 /**************************************************************************
200 * Mapping logic begins here
202 **************************************************************************/
204 /* Baud rate conditionals for mapping. */
213 struct map *next; /* Linked list of maps. */
214 const char *porttype; /* Port type, or "" for any. */
215 const char *type; /* Terminal type to select. */
216 int conditional; /* Baud rate conditionals bitmask. */
217 int speed; /* Baud rate to compare against. */
220 static MAP *cur, *maplist;
222 #define DATA(name,value) { { name }, value }
224 typedef struct speeds {
225 const char string[7];
229 static const SPEEDS speeds[] =
246 /* sgttyb may define up to this point */
248 DATA("19200", B19200),
251 DATA("38400", B38400),
254 DATA("19200", B19200),
257 DATA("38400", B38400),
260 DATA("19200", B19200),
267 DATA("38400", B38400),
274 DATA("57600", B57600),
277 DATA("76800", B57600),
280 DATA("115200", B115200),
283 DATA("153600", B153600),
286 DATA("230400", B230400),
289 DATA("307200", B307200),
292 DATA("460800", B460800),
295 DATA("500000", B500000),
298 DATA("576000", B576000),
301 DATA("921600", B921600),
304 DATA("1000000", B1000000),
307 DATA("1152000", B1152000),
310 DATA("1500000", B1500000),
313 DATA("2000000", B2000000),
316 DATA("2500000", B2500000),
319 DATA("3000000", B3000000),
322 DATA("3500000", B3500000),
325 DATA("4000000", B4000000),
331 tbaudrate(char *rate)
333 const SPEEDS *sp = 0;
336 /* The baudrate number can be preceded by a 'B', which is ignored. */
340 for (n = 0; n < SIZEOF(speeds); ++n) {
341 if (n > 0 && (speeds[n].speed <= speeds[n - 1].speed)) {
342 /* if the speeds are not increasing, likely a numeric overflow */
345 if (!CaselessCmp(rate, speeds[n].string)) {
351 err("unknown baud rate %s", rate);
357 * [port-type][test baudrate]:terminal-type
358 * The baud rate tests are: >, <, @, =, !
361 add_mapping(const char *port, char *arg)
369 mapp = typeMalloc(MAP, 1);
370 if (copy == 0 || mapp == 0)
378 cur = maplist = mapp;
384 mapp->porttype = arg;
385 mapp->conditional = 0;
387 arg = strpbrk(arg, "><@=!:");
389 if (arg == 0) { /* [?]term */
390 mapp->type = mapp->porttype;
395 if (arg == mapp->porttype) /* [><@=! baud]:term */
396 termp = mapp->porttype = 0;
400 for (;; ++arg) { /* Optional conditionals. */
403 if (mapp->conditional & GT)
405 mapp->conditional |= LT;
408 if (mapp->conditional & LT)
410 mapp->conditional |= GT;
413 case '=': /* Not documented. */
414 mapp->conditional |= EQ;
417 mapp->conditional |= NOT;
426 if (mapp->conditional)
429 } else { /* Optional baudrate. */
430 arg = strchr(p = arg, ':');
434 mapp->speed = tbaudrate(p);
439 /* Terminate porttype, if specified. */
443 /* If a NOT conditional, reverse the test. */
444 if (mapp->conditional & NOT)
445 mapp->conditional = ~mapp->conditional & (EQ | GT | LT);
447 /* If user specified a port with an option flag, set it. */
450 if (mapp->porttype) {
452 err("illegal -m option format: %s", copy);
454 mapp->porttype = port;
458 (void) printf("port: %s\n", mapp->porttype ? mapp->porttype : "ANY");
459 (void) printf("type: %s\n", mapp->type);
460 (void) printf("conditional: ");
462 if (mapp->conditional & GT) {
466 if (mapp->conditional & EQ) {
467 (void) printf("%sEQ", p);
470 if (mapp->conditional & LT)
471 (void) printf("%sLT", p);
472 (void) printf("\nspeed: %d\n", mapp->speed);
477 * Return the type of terminal to use for a port of type 'type', as specified
478 * by the first applicable mapping in 'map'. If no mappings apply, return
482 mapped(const char *type)
487 for (mapp = maplist; mapp; mapp = mapp->next)
488 if (mapp->porttype == 0 || !strcmp(mapp->porttype, type)) {
489 switch (mapp->conditional) {
490 case 0: /* No test specified. */
494 match = ((int) ospeed == mapp->speed);
497 match = ((int) ospeed >= mapp->speed);
500 match = ((int) ospeed > mapp->speed);
503 match = ((int) ospeed <= mapp->speed);
506 match = ((int) ospeed < mapp->speed);
514 /* No match found; return given type. */
518 /**************************************************************************
522 **************************************************************************/
525 * Figure out what kind of terminal we're dealing with, and then read in
529 get_termcap_entry(int fd, char *userarg)
548 /* Try the environment. */
549 if ((ttype = getenv("TERM")) != 0)
552 if ((ttypath = ttyname(fd)) != 0) {
553 p = _nc_basename(ttypath);
556 * We have the 4.3BSD library call getttynam(3); that means
557 * there's an /etc/ttys to look up device-to-type mappings in.
558 * Try ttyname(3); check for dialup or other mapping.
560 if ((t = getttynam(p))) {
565 if ((fp = fopen("/etc/ttytype", "r")) != 0
566 || (fp = fopen("/etc/ttys", "r")) != 0) {
570 while (fgets(buffer, sizeof(buffer) - 1, fp) != 0) {
571 for (s = buffer, t = d = 0; *s; s++) {
572 if (isspace(UChar(*s)))
576 else if (d == 0 && s != buffer && s[-1] == '\0')
579 if (t != 0 && d != 0 && !strcmp(d, p)) {
587 #endif /* HAVE_GETTTYNAM */
590 /* If still undefined, use "unknown". */
593 map:ttype = mapped(ttype);
596 * If not a path, remove TERMCAP from the environment so we get a
597 * real entry from /etc/termcap. This prevents us from being fooled
598 * by out of date stuff in the environment.
601 if ((p = getenv("TERMCAP")) != 0 && !_nc_is_abs_path(p)) {
602 /* 'unsetenv("TERMCAP")' is not portable.
603 * The 'environ' array is better.
606 for (n = 0; environ[n] != 0; n++) {
607 if (!strncmp("TERMCAP=", environ[n], (size_t) 8)) {
608 while ((environ[n] = environ[n + 1]) != 0) {
617 * ttype now contains a pointer to the type of the terminal.
618 * If the first character is '?', ask the user.
620 if (ttype[0] == '?') {
621 if (ttype[1] != '\0')
622 ttype = askuser(ttype + 1);
626 /* Find the terminfo entry. If it doesn't exist, ask the user. */
627 while (setupterm((NCURSES_CONST char *) ttype, STDOUT_FILENO, &errret)
630 (void) fprintf(stderr, "%s: unknown terminal type %s\n",
631 _nc_progname, ttype);
634 (void) fprintf(stderr,
635 "%s: can't initialize terminal type %s (error %d)\n",
636 _nc_progname, ttype, errret);
639 ttype = askuser(ttype);
642 tgetflag("am"); /* force lib_termcap.o to be linked for 'ospeed' */
647 /**************************************************************************
651 **************************************************************************/
654 * Convert the obsolete argument forms into something that getopt can handle.
655 * This means that -e, -i and -k get default arguments supplied for them.
658 obsolete(char **argv)
660 for (; *argv; ++argv) {
661 char *parm = argv[0];
663 if (parm[0] == '-' && parm[1] == '\0') {
664 argv[0] = strdup("-q");
669 || (argv[1] && argv[1][0] != '-')
670 || (parm[1] != 'e' && parm[1] != 'i' && parm[1] != 'k')
671 || (parm[2] != '\0'))
673 switch (argv[0][1]) {
675 argv[0] = strdup("-e^H");
678 argv[0] = strdup("-i^C");
681 argv[0] = strdup("-k^U");
688 print_shell_commands(const char *ttype)
695 * Figure out what shell we're using. A hack, we look for an
696 * environmental variable SHELL ending in "csh".
698 if ((var = getenv("SHELL")) != 0
699 && ((len = (int) strlen(leaf = _nc_basename(var))) >= 3)
700 && !strcmp(leaf + len - 3, "csh"))
701 p = "set noglob;\nsetenv TERM %s;\nunset noglob;\n";
704 (void) printf(p, ttype);
710 #define DATA(s) s "\n"
711 static const char msg[] =
715 DATA(" -c set control characters")
716 DATA(" -e ch erase character")
717 DATA(" -I no initialization strings")
718 DATA(" -i ch interrupt character")
719 DATA(" -k ch kill character")
720 DATA(" -m mapping map identifier to type")
721 DATA(" -Q do not output control key settings")
722 DATA(" -r display term on stderr")
723 DATA(" -s output TERM set command")
724 DATA(" -V print curses-version")
725 DATA(" -w set window-size")
728 (void) fprintf(stderr, "Usage: %s [options] [terminal]\n", _nc_progname);
737 return (char) ((optarg[0] == '^' && optarg[1] != '\0')
738 ? ((optarg[1] == '?') ? '\177' : CTRL(optarg[1]))
743 main(int argc, char **argv)
745 int ch, noinit, noset, quiet, Sflag, sflag, showterm;
747 int terasechar = -1; /* new erase character */
748 int intrchar = -1; /* new interrupt character */
749 int tkillchar = -1; /* new kill character */
751 bool opt_c = FALSE; /* set control-chars */
752 bool opt_w = FALSE; /* set window-size */
755 my_fd = STDERR_FILENO;
757 noinit = noset = quiet = Sflag = sflag = showterm = 0;
758 while ((ch = getopt(argc, argv, "a:cd:e:Ii:k:m:p:qQSrsVw")) != -1) {
760 case 'c': /* set control-chars */
763 case 'a': /* OBSOLETE: map identifier to type */
764 add_mapping("arpanet", optarg);
766 case 'd': /* OBSOLETE: map identifier to type */
767 add_mapping("dialup", optarg);
769 case 'e': /* erase character */
770 terasechar = arg_to_char();
772 case 'I': /* no initialization strings */
775 case 'i': /* interrupt character */
776 intrchar = arg_to_char();
778 case 'k': /* kill character */
779 tkillchar = arg_to_char();
781 case 'm': /* map identifier to type */
782 add_mapping(0, optarg);
784 case 'p': /* OBSOLETE: map identifier to type */
785 add_mapping("plugboard", optarg);
787 case 'Q': /* don't output control key settings */
790 case 'q': /* display term only */
793 case 'r': /* display term on stderr */
796 case 'S': /* OBSOLETE: output TERM & TERMCAP */
799 case 's': /* output TERM set command */
802 case 'V': /* print curses-version */
803 puts(curses_version());
804 ExitProgram(EXIT_SUCCESS);
805 case 'w': /* set window-size */
814 _nc_progname = _nc_rootname(*argv);
821 if (!opt_c && !opt_w)
822 opt_c = opt_w = TRUE;
824 my_fd = save_tty_settings(&mode);
827 ospeed = (NCURSES_OSPEED) cfgetospeed(&mode);
829 ospeed = (NCURSES_OSPEED) mode.sg_ospeed;
832 if (same_program(_nc_progname, PROG_RESET)) {
833 reset_start(stderr, TRUE, FALSE);
834 reset_tty_settings(&mode);
836 reset_start(stderr, FALSE, FALSE);
839 ttype = get_termcap_entry(my_fd, *argv);
844 set_window_size(my_fd, lines, columns);
848 set_control_chars(&mode, terasechar, intrchar, tkillchar);
849 set_conversions(&mode);
852 if (send_init_strings(&oldmode)) {
853 (void) putc('\r', stderr);
854 (void) fflush(stderr);
855 (void) napms(1000); /* Settle the terminal. */
859 update_tty_settings(&oldmode, &mode);
864 (void) printf("%s\n", ttype);
867 (void) fprintf(stderr, "Terminal type is %s.\n", ttype);
869 * If erase, kill and interrupt characters could have been
870 * modified and not -Q, display the changes.
873 print_tty_chars(&oldmode, &mode);
878 err("The -S option is not supported under terminfo.");
881 print_shell_commands(ttype);
884 ExitProgram(EXIT_SUCCESS);