1 |
|
|
/* $OpenBSD: tput.c,v 1.23 2017/08/21 21:41:13 deraadt Exp $ */ |
2 |
|
|
|
3 |
|
|
/* |
4 |
|
|
* Copyright (c) 1999 Todd C. Miller <Todd.Miller@courtesan.com> |
5 |
|
|
* |
6 |
|
|
* Permission to use, copy, modify, and distribute this software for any |
7 |
|
|
* purpose with or without fee is hereby granted, provided that the above |
8 |
|
|
* copyright notice and this permission notice appear in all copies. |
9 |
|
|
* |
10 |
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
11 |
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
12 |
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
13 |
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
14 |
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
15 |
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
16 |
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
17 |
|
|
*/ |
18 |
|
|
/*- |
19 |
|
|
* Copyright (c) 1980, 1988, 1993 |
20 |
|
|
* The Regents of the University of California. All rights reserved. |
21 |
|
|
* |
22 |
|
|
* Redistribution and use in source and binary forms, with or without |
23 |
|
|
* modification, are permitted provided that the following conditions |
24 |
|
|
* are met: |
25 |
|
|
* 1. Redistributions of source code must retain the above copyright |
26 |
|
|
* notice, this list of conditions and the following disclaimer. |
27 |
|
|
* 2. Redistributions in binary form must reproduce the above copyright |
28 |
|
|
* notice, this list of conditions and the following disclaimer in the |
29 |
|
|
* documentation and/or other materials provided with the distribution. |
30 |
|
|
* 3. Neither the name of the University nor the names of its contributors |
31 |
|
|
* may be used to endorse or promote products derived from this software |
32 |
|
|
* without specific prior written permission. |
33 |
|
|
* |
34 |
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
35 |
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
36 |
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
37 |
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
38 |
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
39 |
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
40 |
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
41 |
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
42 |
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
43 |
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
44 |
|
|
* SUCH DAMAGE. |
45 |
|
|
*/ |
46 |
|
|
|
47 |
|
|
#include <ctype.h> |
48 |
|
|
#include <err.h> |
49 |
|
|
#include <curses.h> |
50 |
|
|
#include <term.h> |
51 |
|
|
#include <stdio.h> |
52 |
|
|
#include <stdlib.h> |
53 |
|
|
#include <termios.h> |
54 |
|
|
#include <unistd.h> |
55 |
|
|
#include <errno.h> |
56 |
|
|
#include <limits.h> |
57 |
|
|
#include <string.h> |
58 |
|
|
|
59 |
|
|
#define MAXIMUM(a, b) (((a) > (b)) ? (a) : (b)) |
60 |
|
|
|
61 |
|
|
#include <sys/wait.h> |
62 |
|
|
|
63 |
|
|
static void init(void); |
64 |
|
|
static char **process(char *, char *, char **); |
65 |
|
|
static void reset(void); |
66 |
|
|
static void set_margins(void); |
67 |
|
|
static void usage(void); |
68 |
|
|
|
69 |
|
|
extern char *__progname; |
70 |
|
|
|
71 |
|
|
int |
72 |
|
|
main(int argc, char *argv[]) |
73 |
|
|
{ |
74 |
|
|
int ch, exitval, n, Sflag; |
75 |
|
|
size_t len; |
76 |
|
|
char *p, *term, *str; |
77 |
|
|
char **oargv; |
78 |
|
|
|
79 |
|
|
if (pledge("stdio rpath wpath tty flock cpath", NULL) == -1) |
80 |
|
|
err(1, "pledge"); |
81 |
|
|
|
82 |
|
|
oargv = argv; |
83 |
|
|
term = NULL; |
84 |
|
|
Sflag = exitval = 0; |
85 |
|
|
while ((ch = getopt(argc, argv, "ST:")) != -1) |
86 |
|
|
switch(ch) { |
87 |
|
|
case 'T': |
88 |
|
|
term = optarg; |
89 |
|
|
break; |
90 |
|
|
case 'S': |
91 |
|
|
Sflag = 1; |
92 |
|
|
break; |
93 |
|
|
case '?': |
94 |
|
|
default: |
95 |
|
|
usage(); |
96 |
|
|
} |
97 |
|
|
argc -= optind; |
98 |
|
|
argv += optind; |
99 |
|
|
|
100 |
|
|
if (Sflag && argc > 0) |
101 |
|
|
usage(); |
102 |
|
|
|
103 |
|
|
if (!term && !(term = getenv("TERM"))) |
104 |
|
|
errx(2, "No value for $TERM and no -T specified"); |
105 |
|
|
|
106 |
|
|
/* |
107 |
|
|
* NOTE: tgetent() will call setupterm() and set ospeed for us |
108 |
|
|
* (this is ncurses-specific behavior) |
109 |
|
|
*/ |
110 |
|
|
if (tgetent(NULL, term) != 1) |
111 |
|
|
errx(3, "Unknown terminal type `%s'", term); |
112 |
|
|
|
113 |
|
|
if (strcmp(__progname, "clear") == 0) { |
114 |
|
|
if (Sflag) |
115 |
|
|
usage(); |
116 |
|
|
argv = oargv; |
117 |
|
|
*argv = __progname; |
118 |
|
|
*(argv+1) = NULL; |
119 |
|
|
} |
120 |
|
|
if (Sflag) { |
121 |
|
|
char **av; |
122 |
|
|
|
123 |
|
|
/* Build new argv based on stdin */ |
124 |
|
|
argc = n = 0; |
125 |
|
|
av = NULL; |
126 |
|
|
while ((str = fgetln(stdin, &len)) != NULL) { |
127 |
|
|
if (str[len-1] != '\n') |
128 |
|
|
errx(1, "premature EOF"); |
129 |
|
|
str[len-1] = '\0'; |
130 |
|
|
while ((p = strsep(&str, " \t")) != NULL) { |
131 |
|
|
/* grow av as needed */ |
132 |
|
|
if (argc + 1 >= n) { |
133 |
|
|
n += 64; |
134 |
|
|
av = reallocarray(av, n, |
135 |
|
|
sizeof(char *)); |
136 |
|
|
if (av == NULL) |
137 |
|
|
errx(1, "out of memory"); |
138 |
|
|
} |
139 |
|
|
if (*p != '\0' && |
140 |
|
|
(av[argc++] = strdup(p)) == NULL) |
141 |
|
|
errx(1, "out of memory"); |
142 |
|
|
} |
143 |
|
|
} |
144 |
|
|
if (argc > 0) { |
145 |
|
|
av[argc] = NULL; |
146 |
|
|
argv = av; |
147 |
|
|
} |
148 |
|
|
} |
149 |
|
|
while ((p = *argv++)) { |
150 |
|
|
switch (*p) { |
151 |
|
|
case 'i': |
152 |
|
|
if (!strcmp(p, "init")) { |
153 |
|
|
init(); |
154 |
|
|
continue; |
155 |
|
|
} |
156 |
|
|
break; |
157 |
|
|
case 'l': |
158 |
|
|
if (!strcmp(p, "longname")) { |
159 |
|
|
puts(longname()); |
160 |
|
|
continue; |
161 |
|
|
} |
162 |
|
|
break; |
163 |
|
|
case 'r': |
164 |
|
|
if (!strcmp(p, "reset")) { |
165 |
|
|
reset(); |
166 |
|
|
continue; |
167 |
|
|
} |
168 |
|
|
break; |
169 |
|
|
} |
170 |
|
|
|
171 |
|
|
/* First try as terminfo */ |
172 |
|
|
if ((str = tigetstr(p)) && str != (char *)-1) |
173 |
|
|
argv = process(p, str, argv); |
174 |
|
|
else if ((n = tigetnum(p)) != -2) |
175 |
|
|
(void)printf("%d\n", n); |
176 |
|
|
else if ((n = tigetflag(p)) != -1) |
177 |
|
|
exitval = !n; |
178 |
|
|
/* Then fall back on termcap */ |
179 |
|
|
else if ((str = tgetstr(p, NULL))) |
180 |
|
|
argv = process(p, str, argv); |
181 |
|
|
else if ((n = tgetnum(p)) != -1) |
182 |
|
|
(void)printf("%d\n", n); |
183 |
|
|
else if ((exitval = tgetflag(p)) != 0) |
184 |
|
|
exitval = !exitval; |
185 |
|
|
else { |
186 |
|
|
warnx("Unknown terminfo capability `%s'", p); |
187 |
|
|
exitval = 4; |
188 |
|
|
} |
189 |
|
|
} |
190 |
|
|
exit(exitval); |
191 |
|
|
} |
192 |
|
|
|
193 |
|
|
static char ** |
194 |
|
|
process(char *cap, char *str, char **argv) |
195 |
|
|
{ |
196 |
|
|
char *cp, *s, *nargv[9]; |
197 |
|
|
int arg_need, popcount, i; |
198 |
|
|
|
199 |
|
|
/* Count how many values we need for this capability. */ |
200 |
|
|
for (cp = str, arg_need = popcount = 0; *cp != '\0'; cp++) { |
201 |
|
|
if (*cp == '%') { |
202 |
|
|
switch (*++cp) { |
203 |
|
|
case '%': |
204 |
|
|
cp++; |
205 |
|
|
break; |
206 |
|
|
case 'i': |
207 |
|
|
if (popcount < 2) |
208 |
|
|
popcount = 2; |
209 |
|
|
break; |
210 |
|
|
case 'p': |
211 |
|
|
cp++; |
212 |
|
|
if (isdigit((unsigned char)cp[1]) && |
213 |
|
|
popcount < cp[1] - '0') |
214 |
|
|
popcount = cp[1] - '0'; |
215 |
|
|
break; |
216 |
|
|
case 'd': |
217 |
|
|
case 's': |
218 |
|
|
case '0': |
219 |
|
|
case '1': |
220 |
|
|
case '2': |
221 |
|
|
case '3': |
222 |
|
|
case '4': |
223 |
|
|
case '5': |
224 |
|
|
case '6': |
225 |
|
|
case '7': |
226 |
|
|
case '8': |
227 |
|
|
case '9': |
228 |
|
|
case '.': |
229 |
|
|
case '+': |
230 |
|
|
arg_need++; |
231 |
|
|
break; |
232 |
|
|
default: |
233 |
|
|
break; |
234 |
|
|
} |
235 |
|
|
} |
236 |
|
|
} |
237 |
|
|
arg_need = MAXIMUM(arg_need, popcount); |
238 |
|
|
if (arg_need > 9) |
239 |
|
|
errx(2, "too many arguments (%d) for capability `%s'", |
240 |
|
|
arg_need, cap); |
241 |
|
|
|
242 |
|
|
for (i = 0; i < arg_need; i++) { |
243 |
|
|
long l; |
244 |
|
|
|
245 |
|
|
if (argv[i] == NULL) |
246 |
|
|
errx(2, "not enough arguments (%d) for capability `%s'", |
247 |
|
|
arg_need, cap); |
248 |
|
|
|
249 |
|
|
/* convert ascii representation of numbers to longs */ |
250 |
|
|
if (isdigit((unsigned char)argv[i][0]) |
251 |
|
|
&& (l = strtol(argv[i], &cp, 10)) >= 0 |
252 |
|
|
&& l < LONG_MAX && *cp == '\0') |
253 |
|
|
nargv[i] = (char *)l; |
254 |
|
|
else |
255 |
|
|
nargv[i] = argv[i]; |
256 |
|
|
} |
257 |
|
|
|
258 |
|
|
s = tparm(str, nargv[0], nargv[1], nargv[2], nargv[3], |
259 |
|
|
nargv[4], nargv[5], nargv[6], nargv[7], nargv[8]); |
260 |
|
|
putp(s); |
261 |
|
|
fflush(stdout); |
262 |
|
|
|
263 |
|
|
return (argv + arg_need); |
264 |
|
|
} |
265 |
|
|
|
266 |
|
|
static void |
267 |
|
|
init(void) |
268 |
|
|
{ |
269 |
|
|
FILE *ifile; |
270 |
|
|
size_t len; |
271 |
|
|
char *buf; |
272 |
|
|
int wstatus; |
273 |
|
|
pid_t pid; |
274 |
|
|
|
275 |
|
|
if (init_prog && !issetugid()) { |
276 |
|
|
switch (pid = vfork()) { |
277 |
|
|
case -1: |
278 |
|
|
err(4, "vfork"); |
279 |
|
|
break; |
280 |
|
|
case 0: |
281 |
|
|
/* child */ |
282 |
|
|
execl(init_prog, init_prog, (char *)NULL); |
283 |
|
|
_exit(127); |
284 |
|
|
break; |
285 |
|
|
default: |
286 |
|
|
while (waitpid(pid, &wstatus, 0) == -1) { |
287 |
|
|
if (errno != EINTR) |
288 |
|
|
break; |
289 |
|
|
} |
290 |
|
|
/* parent */ |
291 |
|
|
break; |
292 |
|
|
} |
293 |
|
|
} |
294 |
|
|
if (init_1string) |
295 |
|
|
putp(init_1string); |
296 |
|
|
if (init_2string) |
297 |
|
|
putp(init_2string); |
298 |
|
|
set_margins(); |
299 |
|
|
/* always use 8 space tabs */ |
300 |
|
|
if (init_tabs != 8 && clear_all_tabs && set_tab) { |
301 |
|
|
int i; |
302 |
|
|
|
303 |
|
|
putp(clear_all_tabs); |
304 |
|
|
for (i = 0; i < (columns - 1) / 8; i++) { |
305 |
|
|
if (parm_right_cursor) |
306 |
|
|
putp(tparm(parm_right_cursor, 8)); |
307 |
|
|
else |
308 |
|
|
fputs(" ", stdout); |
309 |
|
|
putp(set_tab); |
310 |
|
|
} |
311 |
|
|
} |
312 |
|
|
if (init_file && !issetugid() && (ifile = fopen(init_file, "r"))) { |
313 |
|
|
while ((buf = fgetln(ifile, &len)) != NULL) { |
314 |
|
|
if (buf[len-1] != '\n') |
315 |
|
|
errx(1, "premature EOF reading %s", init_file); |
316 |
|
|
buf[len-1] = '\0'; |
317 |
|
|
putp(buf); |
318 |
|
|
} |
319 |
|
|
fclose(ifile); |
320 |
|
|
} |
321 |
|
|
if (init_3string) |
322 |
|
|
putp(init_3string); |
323 |
|
|
fflush(stdout); |
324 |
|
|
} |
325 |
|
|
|
326 |
|
|
static void |
327 |
|
|
reset(void) |
328 |
|
|
{ |
329 |
|
|
FILE *rfile; |
330 |
|
|
size_t len; |
331 |
|
|
char *buf; |
332 |
|
|
|
333 |
|
|
if (reset_1string) |
334 |
|
|
putp(reset_1string); |
335 |
|
|
if (reset_2string) |
336 |
|
|
putp(reset_2string); |
337 |
|
|
set_margins(); |
338 |
|
|
if (reset_file && !issetugid() && (rfile = fopen(reset_file, "r"))) { |
339 |
|
|
while ((buf = fgetln(rfile, &len)) != NULL) { |
340 |
|
|
if (buf[len-1] != '\n') |
341 |
|
|
errx(1, "premature EOF reading %s", reset_file); |
342 |
|
|
buf[len-1] = '\0'; |
343 |
|
|
putp(buf); |
344 |
|
|
} |
345 |
|
|
fclose(rfile); |
346 |
|
|
} |
347 |
|
|
if (reset_3string) |
348 |
|
|
putp(reset_3string); |
349 |
|
|
fflush(stdout); |
350 |
|
|
} |
351 |
|
|
|
352 |
|
|
static void |
353 |
|
|
set_margins(void) |
354 |
|
|
{ |
355 |
|
|
|
356 |
|
|
/* |
357 |
|
|
* Four possibilities: |
358 |
|
|
* 1) we have set_lr_margin and can set things with one call |
359 |
|
|
* 2) we have set_{left,right}_margin_parm, use two calls |
360 |
|
|
* 3) we have set_{left,right}_margin, set based on position |
361 |
|
|
* 4) none of the above, leave things the way they are |
362 |
|
|
*/ |
363 |
|
|
if (set_lr_margin) { |
364 |
|
|
putp(tparm(set_lr_margin, 0, columns - 1)); |
365 |
|
|
} else if (set_left_margin_parm && set_right_margin_parm) { |
366 |
|
|
putp(tparm(set_left_margin_parm, 0)); |
367 |
|
|
putp(tparm(set_right_margin_parm, columns - 1)); |
368 |
|
|
} else if (set_left_margin && set_right_margin && clear_margins) { |
369 |
|
|
putp(clear_margins); |
370 |
|
|
|
371 |
|
|
/* go to column 0 and set the left margin */ |
372 |
|
|
putp(carriage_return ? carriage_return : "\r"); |
373 |
|
|
putp(set_left_margin); |
374 |
|
|
|
375 |
|
|
/* go to last column and set the right margin */ |
376 |
|
|
if (parm_right_cursor) |
377 |
|
|
putp(tparm(parm_right_cursor, columns - 1)); |
378 |
|
|
else |
379 |
|
|
printf("%*s", columns - 1, " "); |
380 |
|
|
putp(set_right_margin); |
381 |
|
|
putp(carriage_return ? carriage_return : "\r"); |
382 |
|
|
} |
383 |
|
|
fflush(stdout); |
384 |
|
|
} |
385 |
|
|
|
386 |
|
|
static void |
387 |
|
|
usage(void) |
388 |
|
|
{ |
389 |
|
|
|
390 |
|
|
if (strcmp(__progname, "clear") == 0) |
391 |
|
|
(void)fprintf(stderr, "usage: %s [-T term]\n", __progname); |
392 |
|
|
else |
393 |
|
|
(void)fprintf(stderr, |
394 |
|
|
"usage: %s [-T term] attribute [attribute-args] ...\n" |
395 |
|
|
" %s [-T term] -S\n", __progname, __progname); |
396 |
|
|
exit(1); |
397 |
|
|
} |