1 /*
2 * Copyright 2001-2022 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include "internal/e_os.h"
11 #include <openssl/e_os2.h>
12 #include <openssl/err.h>
13 #include <openssl/ui.h>
14
15 #ifndef OPENSSL_NO_UI_CONSOLE
16 /*
17 * need for #define _POSIX_C_SOURCE arises whenever you pass -ansi to gcc
18 * [maybe others?], because it masks interfaces not discussed in standard,
19 * sigaction and fileno included. -pedantic would be more appropriate for the
20 * intended purposes, but we can't prevent users from adding -ansi.
21 */
22 # if defined(OPENSSL_SYS_VXWORKS)
23 # include <sys/types.h>
24 # endif
25
26 # if !defined(_POSIX_C_SOURCE) && defined(OPENSSL_SYS_VMS)
27 # ifndef _POSIX_C_SOURCE
28 # define _POSIX_C_SOURCE 2
29 # endif
30 # endif
31 # include <signal.h>
32 # include <stdio.h>
33 # include <string.h>
34 # include <errno.h>
35
36 # if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS)
37 # include <unistd.h>
38 /*
39 * If unistd.h defines _POSIX_VERSION, we conclude that we are on a POSIX
40 * system and have sigaction and termios.
41 */
42 # if defined(_POSIX_VERSION) && _POSIX_VERSION>=199309L
43
44 # define SIGACTION
45 # if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY)
46 # define TERMIOS
47 # endif
48
49 # endif
50 # endif
51
52 # include "ui_local.h"
53 # include "internal/cryptlib.h"
54
55 # ifdef OPENSSL_SYS_VMS /* prototypes for sys$whatever */
56 # include <starlet.h>
57 # ifdef __DECC
58 # pragma message disable DOLLARID
59 # endif
60 # endif
61
62 # ifdef WIN_CONSOLE_BUG
63 # include <windows.h>
64 # ifndef OPENSSL_SYS_WINCE
65 # include <wincon.h>
66 # endif
67 # endif
68
69 /*
70 * There are 6 types of terminal interface supported, TERMIO, TERMIOS, VMS,
71 * MSDOS, WIN32 Console and SGTTY.
72 *
73 * If someone defines one of the macros TERMIO, TERMIOS or SGTTY, it will
74 * remain respected. Otherwise, we default to TERMIOS except for a few
75 * systems that require something different.
76 *
77 * Note: we do not use SGTTY unless it's defined by the configuration. We
78 * may eventually opt to remove its use entirely.
79 */
80
81 # if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY)
82
83 # if defined(_LIBC)
84 # undef TERMIOS
85 # define TERMIO
86 # undef SGTTY
87 /*
88 * We know that VMS, MSDOS, VXWORKS, use entirely other mechanisms.
89 */
90 # elif !defined(OPENSSL_SYS_VMS) \
91 && !defined(OPENSSL_SYS_MSDOS) \
92 && !defined(OPENSSL_SYS_VXWORKS)
93 # define TERMIOS
94 # undef TERMIO
95 # undef SGTTY
96 # endif
97
98 # endif
99
100 # if defined(OPENSSL_SYS_VXWORKS)
101 # undef TERMIOS
102 # undef TERMIO
103 # undef SGTTY
104 # endif
105
106 # ifdef TERMIOS
107 # include <termios.h>
108 # define TTY_STRUCT struct termios
109 # define TTY_FLAGS c_lflag
110 # define TTY_get(tty,data) tcgetattr(tty,data)
111 # define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data)
112 # endif
113
114 # ifdef TERMIO
115 # include <termio.h>
116 # define TTY_STRUCT struct termio
117 # define TTY_FLAGS c_lflag
118 # define TTY_get(tty,data) ioctl(tty,TCGETA,data)
119 # define TTY_set(tty,data) ioctl(tty,TCSETA,data)
120 # endif
121
122 # ifdef SGTTY
123 # include <sgtty.h>
124 # define TTY_STRUCT struct sgttyb
125 # define TTY_FLAGS sg_flags
126 # define TTY_get(tty,data) ioctl(tty,TIOCGETP,data)
127 # define TTY_set(tty,data) ioctl(tty,TIOCSETP,data)
128 # endif
129
130 # if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && ! (defined(OPENSSL_SYS_TANDEM) && defined(_SPT_MODEL_))
131 # include <sys/ioctl.h>
132 # endif
133
134 # ifdef OPENSSL_SYS_MSDOS
135 # include <conio.h>
136 # endif
137
138 # ifdef OPENSSL_SYS_VMS
139 # include <ssdef.h>
140 # include <iodef.h>
141 # include <ttdef.h>
142 # include <descrip.h>
143 struct IOSB {
144 short iosb$w_value;
145 short iosb$w_count;
146 long iosb$l_info;
147 };
148 # endif
149
150 # ifndef NX509_SIG
151 # define NX509_SIG 32
152 # endif
153
154 /* Define globals. They are protected by a lock */
155 # ifdef SIGACTION
156 static struct sigaction savsig[NX509_SIG];
157 # else
158 static void (*savsig[NX509_SIG]) (int);
159 # endif
160
161 # ifdef OPENSSL_SYS_VMS
162 static struct IOSB iosb;
163 static $DESCRIPTOR(terminal, "TT");
164 static long tty_orig[3], tty_new[3]; /* XXX Is there any guarantee that this
165 * will always suffice for the actual
166 * structures? */
167 static long status;
168 static unsigned short channel = 0;
169 # elif defined(_WIN32) && !defined(_WIN32_WCE)
170 static DWORD tty_orig, tty_new;
171 # else
172 # if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__)
173 static TTY_STRUCT tty_orig, tty_new;
174 # endif
175 # endif
176 static FILE *tty_in, *tty_out;
177 static int is_a_tty;
178
179 /* Declare static functions */
180 # if !defined(OPENSSL_SYS_WINCE)
181 static int read_till_nl(FILE *);
182 static void recsig(int);
183 static void pushsig(void);
184 static void popsig(void);
185 # endif
186 # if defined(OPENSSL_SYS_MSDOS) && !defined(_WIN32)
187 static int noecho_fgets(char *buf, int size, FILE *tty);
188 # endif
189 static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl);
190
191 static int read_string(UI *ui, UI_STRING *uis);
192 static int write_string(UI *ui, UI_STRING *uis);
193
194 static int open_console(UI *ui);
195 static int echo_console(UI *ui);
196 static int noecho_console(UI *ui);
197 static int close_console(UI *ui);
198
199 /*
200 * The following function makes sure that info and error strings are printed
201 * before any prompt.
202 */
write_string(UI * ui,UI_STRING * uis)203 static int write_string(UI *ui, UI_STRING *uis)
204 {
205 switch (UI_get_string_type(uis)) {
206 case UIT_ERROR:
207 case UIT_INFO:
208 fputs(UI_get0_output_string(uis), tty_out);
209 fflush(tty_out);
210 break;
211 case UIT_NONE:
212 case UIT_PROMPT:
213 case UIT_VERIFY:
214 case UIT_BOOLEAN:
215 break;
216 }
217 return 1;
218 }
219
read_string(UI * ui,UI_STRING * uis)220 static int read_string(UI *ui, UI_STRING *uis)
221 {
222 int ok = 0;
223
224 switch (UI_get_string_type(uis)) {
225 case UIT_BOOLEAN:
226 fputs(UI_get0_output_string(uis), tty_out);
227 fputs(UI_get0_action_string(uis), tty_out);
228 fflush(tty_out);
229 return read_string_inner(ui, uis,
230 UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO,
231 0);
232 case UIT_PROMPT:
233 fputs(UI_get0_output_string(uis), tty_out);
234 fflush(tty_out);
235 return read_string_inner(ui, uis,
236 UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO,
237 1);
238 case UIT_VERIFY:
239 fprintf(tty_out, "Verifying - %s", UI_get0_output_string(uis));
240 fflush(tty_out);
241 if ((ok = read_string_inner(ui, uis,
242 UI_get_input_flags(uis) &
243 UI_INPUT_FLAG_ECHO, 1)) <= 0)
244 return ok;
245 if (strcmp(UI_get0_result_string(uis), UI_get0_test_string(uis)) != 0) {
246 fprintf(tty_out, "Verify failure\n");
247 fflush(tty_out);
248 return 0;
249 }
250 break;
251 case UIT_NONE:
252 case UIT_INFO:
253 case UIT_ERROR:
254 break;
255 }
256 return 1;
257 }
258
259 # if !defined(OPENSSL_SYS_WINCE)
260 /* Internal functions to read a string without echoing */
read_till_nl(FILE * in)261 static int read_till_nl(FILE *in)
262 {
263 # define SIZE 4
264 char buf[SIZE + 1];
265
266 do {
267 if (!fgets(buf, SIZE, in))
268 return 0;
269 } while (strchr(buf, '\n') == NULL);
270 return 1;
271 }
272
273 static volatile sig_atomic_t intr_signal;
274 # endif
275
read_string_inner(UI * ui,UI_STRING * uis,int echo,int strip_nl)276 static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl)
277 {
278 static int ps;
279 int ok;
280 char result[BUFSIZ];
281 int maxsize = BUFSIZ - 1;
282 # if !defined(OPENSSL_SYS_WINCE)
283 char *p = NULL;
284 int echo_eol = !echo;
285
286 intr_signal = 0;
287 ok = 0;
288 ps = 0;
289
290 pushsig();
291 ps = 1;
292
293 if (!echo && !noecho_console(ui))
294 goto error;
295 ps = 2;
296
297 result[0] = '\0';
298 # if defined(_WIN32)
299 if (is_a_tty) {
300 DWORD numread;
301 # if defined(CP_UTF8)
302 if (GetEnvironmentVariableW(L"OPENSSL_WIN32_UTF8", NULL, 0) != 0) {
303 WCHAR wresult[BUFSIZ];
304
305 if (ReadConsoleW(GetStdHandle(STD_INPUT_HANDLE),
306 wresult, maxsize, &numread, NULL)) {
307 if (numread >= 2 &&
308 wresult[numread-2] == L'\r' &&
309 wresult[numread-1] == L'\n') {
310 wresult[numread-2] = L'\n';
311 numread--;
312 }
313 wresult[numread] = '\0';
314 if (WideCharToMultiByte(CP_UTF8, 0, wresult, -1,
315 result, sizeof(result), NULL, 0) > 0)
316 p = result;
317
318 OPENSSL_cleanse(wresult, sizeof(wresult));
319 }
320 } else
321 # endif
322 if (ReadConsoleA(GetStdHandle(STD_INPUT_HANDLE),
323 result, maxsize, &numread, NULL)) {
324 if (numread >= 2 &&
325 result[numread-2] == '\r' && result[numread-1] == '\n') {
326 result[numread-2] = '\n';
327 numread--;
328 }
329 result[numread] = '\0';
330 p = result;
331 }
332 } else
333 # elif defined(OPENSSL_SYS_MSDOS)
334 if (!echo) {
335 noecho_fgets(result, maxsize, tty_in);
336 p = result; /* FIXME: noecho_fgets doesn't return errors */
337 } else
338 # endif
339 p = fgets(result, maxsize, tty_in);
340 if (p == NULL)
341 goto error;
342 if (feof(tty_in))
343 goto error;
344 if (ferror(tty_in))
345 goto error;
346 if ((p = (char *)strchr(result, '\n')) != NULL) {
347 if (strip_nl)
348 *p = '\0';
349 } else if (!read_till_nl(tty_in))
350 goto error;
351 if (UI_set_result(ui, uis, result) >= 0)
352 ok = 1;
353
354 error:
355 if (intr_signal == SIGINT)
356 ok = -1;
357 if (echo_eol)
358 fprintf(tty_out, "\n");
359 if (ps >= 2 && !echo && !echo_console(ui))
360 ok = 0;
361
362 if (ps >= 1)
363 popsig();
364 # else
365 ok = 1;
366 # endif
367
368 OPENSSL_cleanse(result, BUFSIZ);
369 return ok;
370 }
371
372 /* Internal functions to open, handle and close a channel to the console. */
open_console(UI * ui)373 static int open_console(UI *ui)
374 {
375 if (!CRYPTO_THREAD_write_lock(ui->lock))
376 return 0;
377 is_a_tty = 1;
378
379 # if defined(OPENSSL_SYS_VXWORKS)
380 tty_in = stdin;
381 tty_out = stderr;
382 # elif defined(_WIN32) && !defined(_WIN32_WCE)
383 if ((tty_out = fopen("conout$", "w")) == NULL)
384 tty_out = stderr;
385
386 if (GetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), &tty_orig)) {
387 tty_in = stdin;
388 } else {
389 is_a_tty = 0;
390 if ((tty_in = fopen("conin$", "r")) == NULL)
391 tty_in = stdin;
392 }
393 # else
394 # ifdef OPENSSL_SYS_MSDOS
395 # define DEV_TTY "con"
396 # else
397 # define DEV_TTY "/dev/tty"
398 # endif
399 if ((tty_in = fopen(DEV_TTY, "r")) == NULL)
400 tty_in = stdin;
401 if ((tty_out = fopen(DEV_TTY, "w")) == NULL)
402 tty_out = stderr;
403 # endif
404
405 # if defined(TTY_get) && !defined(OPENSSL_SYS_VMS)
406 if (TTY_get(fileno(tty_in), &tty_orig) == -1) {
407 # ifdef ENOTTY
408 if (errno == ENOTTY)
409 is_a_tty = 0;
410 else
411 # endif
412 # ifdef EINVAL
413 /*
414 * Ariel Glenn reports that solaris can return EINVAL instead.
415 * This should be ok
416 */
417 if (errno == EINVAL)
418 is_a_tty = 0;
419 else
420 # endif
421 # ifdef ENXIO
422 /*
423 * Solaris can return ENXIO.
424 * This should be ok
425 */
426 if (errno == ENXIO)
427 is_a_tty = 0;
428 else
429 # endif
430 # ifdef EIO
431 /*
432 * Linux can return EIO.
433 * This should be ok
434 */
435 if (errno == EIO)
436 is_a_tty = 0;
437 else
438 # endif
439 # ifdef EPERM
440 /*
441 * Linux can return EPERM (Operation not permitted),
442 * e.g. if a daemon executes openssl via fork()+execve()
443 * This should be ok
444 */
445 if (errno == EPERM)
446 is_a_tty = 0;
447 else
448 # endif
449 # ifdef ENODEV
450 /*
451 * MacOS X returns ENODEV (Operation not supported by device),
452 * which seems appropriate.
453 */
454 if (errno == ENODEV)
455 is_a_tty = 0;
456 else
457 # endif
458 {
459 ERR_raise_data(ERR_LIB_UI, UI_R_UNKNOWN_TTYGET_ERRNO_VALUE,
460 "errno=%d", errno);
461 return 0;
462 }
463 }
464 # endif
465 # ifdef OPENSSL_SYS_VMS
466 status = sys$assign(&terminal, &channel, 0, 0);
467
468 /* if there isn't a TT device, something is very wrong */
469 if (status != SS$_NORMAL) {
470 ERR_raise_data(ERR_LIB_UI, UI_R_SYSASSIGN_ERROR,
471 "status=%%X%08X", status);
472 return 0;
473 }
474
475 status = sys$qiow(0, channel, IO$_SENSEMODE, &iosb, 0, 0, tty_orig, 12,
476 0, 0, 0, 0);
477
478 /* If IO$_SENSEMODE doesn't work, this is not a terminal device */
479 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
480 is_a_tty = 0;
481 # endif
482 return 1;
483 }
484
noecho_console(UI * ui)485 static int noecho_console(UI *ui)
486 {
487 # ifdef TTY_FLAGS
488 memcpy(&(tty_new), &(tty_orig), sizeof(tty_orig));
489 tty_new.TTY_FLAGS &= ~ECHO;
490 # endif
491
492 # if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
493 if (is_a_tty && (TTY_set(fileno(tty_in), &tty_new) == -1))
494 return 0;
495 # endif
496 # ifdef OPENSSL_SYS_VMS
497 if (is_a_tty) {
498 tty_new[0] = tty_orig[0];
499 tty_new[1] = tty_orig[1] | TT$M_NOECHO;
500 tty_new[2] = tty_orig[2];
501 status = sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12,
502 0, 0, 0, 0);
503 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) {
504 ERR_raise_data(ERR_LIB_UI, UI_R_SYSQIOW_ERROR,
505 "status=%%X%08X, iosb.iosb$w_value=%%X%08X",
506 status, iosb.iosb$w_value);
507 return 0;
508 }
509 }
510 # endif
511 # if defined(_WIN32) && !defined(_WIN32_WCE)
512 if (is_a_tty) {
513 tty_new = tty_orig;
514 tty_new &= ~ENABLE_ECHO_INPUT;
515 SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), tty_new);
516 }
517 # endif
518 return 1;
519 }
520
echo_console(UI * ui)521 static int echo_console(UI *ui)
522 {
523 # if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
524 memcpy(&(tty_new), &(tty_orig), sizeof(tty_orig));
525 if (is_a_tty && (TTY_set(fileno(tty_in), &tty_new) == -1))
526 return 0;
527 # endif
528 # ifdef OPENSSL_SYS_VMS
529 if (is_a_tty) {
530 tty_new[0] = tty_orig[0];
531 tty_new[1] = tty_orig[1];
532 tty_new[2] = tty_orig[2];
533 status = sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12,
534 0, 0, 0, 0);
535 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) {
536 ERR_raise_data(ERR_LIB_UI, UI_R_SYSQIOW_ERROR,
537 "status=%%X%08X, iosb.iosb$w_value=%%X%08X",
538 status, iosb.iosb$w_value);
539 return 0;
540 }
541 }
542 # endif
543 # if defined(_WIN32) && !defined(_WIN32_WCE)
544 if (is_a_tty) {
545 tty_new = tty_orig;
546 SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), tty_new);
547 }
548 # endif
549 return 1;
550 }
551
close_console(UI * ui)552 static int close_console(UI *ui)
553 {
554 int ret = 1;
555
556 if (tty_in != stdin)
557 fclose(tty_in);
558 if (tty_out != stderr)
559 fclose(tty_out);
560 # ifdef OPENSSL_SYS_VMS
561 status = sys$dassgn(channel);
562 if (status != SS$_NORMAL) {
563 ERR_raise_data(ERR_LIB_UI, UI_R_SYSDASSGN_ERROR,
564 "status=%%X%08X", status);
565 ret = 0;
566 }
567 # endif
568 CRYPTO_THREAD_unlock(ui->lock);
569
570 return ret;
571 }
572
573 # if !defined(OPENSSL_SYS_WINCE)
574 /* Internal functions to handle signals and act on them */
pushsig(void)575 static void pushsig(void)
576 {
577 # ifndef OPENSSL_SYS_WIN32
578 int i;
579 # endif
580 # ifdef SIGACTION
581 struct sigaction sa;
582
583 memset(&sa, 0, sizeof(sa));
584 sa.sa_handler = recsig;
585 # endif
586
587 # ifdef OPENSSL_SYS_WIN32
588 savsig[SIGABRT] = signal(SIGABRT, recsig);
589 savsig[SIGFPE] = signal(SIGFPE, recsig);
590 savsig[SIGILL] = signal(SIGILL, recsig);
591 savsig[SIGINT] = signal(SIGINT, recsig);
592 savsig[SIGSEGV] = signal(SIGSEGV, recsig);
593 savsig[SIGTERM] = signal(SIGTERM, recsig);
594 # else
595 for (i = 1; i < NX509_SIG; i++) {
596 # ifdef SIGUSR1
597 if (i == SIGUSR1)
598 continue;
599 # endif
600 # ifdef SIGUSR2
601 if (i == SIGUSR2)
602 continue;
603 # endif
604 # ifdef SIGKILL
605 if (i == SIGKILL) /* We can't make any action on that. */
606 continue;
607 # endif
608 # ifdef SIGACTION
609 sigaction(i, &sa, &savsig[i]);
610 # else
611 savsig[i] = signal(i, recsig);
612 # endif
613 }
614 # endif
615
616 # ifdef SIGWINCH
617 signal(SIGWINCH, SIG_DFL);
618 # endif
619 }
620
popsig(void)621 static void popsig(void)
622 {
623 # ifdef OPENSSL_SYS_WIN32
624 signal(SIGABRT, savsig[SIGABRT]);
625 signal(SIGFPE, savsig[SIGFPE]);
626 signal(SIGILL, savsig[SIGILL]);
627 signal(SIGINT, savsig[SIGINT]);
628 signal(SIGSEGV, savsig[SIGSEGV]);
629 signal(SIGTERM, savsig[SIGTERM]);
630 # else
631 int i;
632 for (i = 1; i < NX509_SIG; i++) {
633 # ifdef SIGUSR1
634 if (i == SIGUSR1)
635 continue;
636 # endif
637 # ifdef SIGUSR2
638 if (i == SIGUSR2)
639 continue;
640 # endif
641 # ifdef SIGACTION
642 sigaction(i, &savsig[i], NULL);
643 # else
644 signal(i, savsig[i]);
645 # endif
646 }
647 # endif
648 }
649
recsig(int i)650 static void recsig(int i)
651 {
652 intr_signal = i;
653 }
654 # endif
655
656 /* Internal functions specific for Windows */
657 # if defined(OPENSSL_SYS_MSDOS) && !defined(_WIN32)
noecho_fgets(char * buf,int size,FILE * tty)658 static int noecho_fgets(char *buf, int size, FILE *tty)
659 {
660 int i;
661 char *p;
662
663 p = buf;
664 for (;;) {
665 if (size == 0) {
666 *p = '\0';
667 break;
668 }
669 size--;
670 # if defined(_WIN32)
671 i = _getch();
672 # else
673 i = getch();
674 # endif
675 if (i == '\r')
676 i = '\n';
677 *(p++) = i;
678 if (i == '\n') {
679 *p = '\0';
680 break;
681 }
682 }
683 # ifdef WIN_CONSOLE_BUG
684 /*
685 * Win95 has several evil console bugs: one of these is that the last
686 * character read using getch() is passed to the next read: this is
687 * usually a CR so this can be trouble. No STDIO fix seems to work but
688 * flushing the console appears to do the trick.
689 */
690 {
691 HANDLE inh;
692 inh = GetStdHandle(STD_INPUT_HANDLE);
693 FlushConsoleInputBuffer(inh);
694 }
695 # endif
696 return strlen(buf);
697 }
698 # endif
699
700 static UI_METHOD ui_openssl = {
701 "OpenSSL default user interface",
702 open_console,
703 write_string,
704 NULL, /* No flusher is needed for command lines */
705 read_string,
706 close_console,
707 NULL
708 };
709
710 /* The method with all the built-in console thingies */
UI_OpenSSL(void)711 UI_METHOD *UI_OpenSSL(void)
712 {
713 return &ui_openssl;
714 }
715
716 static const UI_METHOD *default_UI_meth = &ui_openssl;
717
718 #else
719
720 static const UI_METHOD *default_UI_meth = NULL;
721
722 #endif
723
UI_set_default_method(const UI_METHOD * meth)724 void UI_set_default_method(const UI_METHOD *meth)
725 {
726 default_UI_meth = meth;
727 }
728
UI_get_default_method(void)729 const UI_METHOD *UI_get_default_method(void)
730 {
731 return default_UI_meth;
732 }
733
