1 /* crypto/ui/ui_openssl.c -*- mode:C; c-file-style: "eay" -*- */
2 /*
3 * Written by Richard Levitte (richard@levitte.org) and others for the
4 * OpenSSL project 2001.
5 */
6 /* ====================================================================
7 * Copyright (c) 2001 The OpenSSL Project. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * openssl-core@openssl.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 * acknowledgment:
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 *
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
57 *
58 */
59
60 /*-
61 * The lowest level part of this file was previously in crypto/des/read_pwd.c,
62 * Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
63 * All rights reserved.
64 *
65 * This package is an SSL implementation written
66 * by Eric Young (eay@cryptsoft.com).
67 * The implementation was written so as to conform with Netscapes SSL.
68 *
69 * This library is free for commercial and non-commercial use as long as
70 * the following conditions are aheared to. The following conditions
71 * apply to all code found in this distribution, be it the RC4, RSA,
72 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
73 * included with this distribution is covered by the same copyright terms
74 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
75 *
76 * Copyright remains Eric Young's, and as such any Copyright notices in
77 * the code are not to be removed.
78 * If this package is used in a product, Eric Young should be given attribution
79 * as the author of the parts of the library used.
80 * This can be in the form of a textual message at program startup or
81 * in documentation (online or textual) provided with the package.
82 *
83 * Redistribution and use in source and binary forms, with or without
84 * modification, are permitted provided that the following conditions
85 * are met:
86 * 1. Redistributions of source code must retain the copyright
87 * notice, this list of conditions and the following disclaimer.
88 * 2. Redistributions in binary form must reproduce the above copyright
89 * notice, this list of conditions and the following disclaimer in the
90 * documentation and/or other materials provided with the distribution.
91 * 3. All advertising materials mentioning features or use of this software
92 * must display the following acknowledgement:
93 * "This product includes cryptographic software written by
94 * Eric Young (eay@cryptsoft.com)"
95 * The word 'cryptographic' can be left out if the rouines from the library
96 * being used are not cryptographic related :-).
97 * 4. If you include any Windows specific code (or a derivative thereof) from
98 * the apps directory (application code) you must include an acknowledgement:
99 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
100 *
101 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
102 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
103 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
104 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
105 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
106 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
107 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
108 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
109 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
110 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
111 * SUCH DAMAGE.
112 *
113 * The licence and distribution terms for any publically available version or
114 * derivative of this code cannot be changed. i.e. this code cannot simply be
115 * copied and put under another distribution licence
116 * [including the GNU Public Licence.]
117 */
118
119 #include <openssl/e_os2.h>
120
121 /*
122 * need for #define _POSIX_C_SOURCE arises whenever you pass -ansi to gcc
123 * [maybe others?], because it masks interfaces not discussed in standard,
124 * sigaction and fileno included. -pedantic would be more appropriate for the
125 * intended purposes, but we can't prevent users from adding -ansi.
126 */
127 #if defined(OPENSSL_SYSNAME_VXWORKS)
128 # include <sys/types.h>
129 #endif
130
131 #if !defined(_POSIX_C_SOURCE) && defined(OPENSSL_SYS_VMS)
132 # ifndef _POSIX_C_SOURCE
133 # define _POSIX_C_SOURCE 2
134 # endif
135 #endif
136 #include <signal.h>
137 #include <stdio.h>
138 #include <string.h>
139 #include <errno.h>
140
141 #if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS)
142 /*
143 * If unistd.h defines _POSIX_VERSION, we conclude that we are on a POSIX
144 * system and have sigaction and termios.
145 */
146 # if defined(_POSIX_VERSION)
147
148 # define SIGACTION
149 # if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY)
150 # define TERMIOS
151 # endif
152
153 # endif
154 #endif
155
156 #ifdef WIN16TTY
157 # undef OPENSSL_SYS_WIN16
158 # undef WIN16
159 # undef _WINDOWS
160 # include <graph.h>
161 #endif
162
163 /* 06-Apr-92 Luke Brennan Support for VMS */
164 #include "ui_locl.h"
165 #include "cryptlib.h"
166
167 #ifdef OPENSSL_SYS_VMS /* prototypes for sys$whatever */
168 # include <starlet.h>
169 # ifdef __DECC
170 # pragma message disable DOLLARID
171 # endif
172 #endif
173
174 #ifdef WIN_CONSOLE_BUG
175 # include <windows.h>
176 # ifndef OPENSSL_SYS_WINCE
177 # include <wincon.h>
178 # endif
179 #endif
180
181 /*
182 * There are 5 types of terminal interface supported, TERMIO, TERMIOS, VMS,
183 * MSDOS and SGTTY.
184 *
185 * If someone defines one of the macros TERMIO, TERMIOS or SGTTY, it will
186 * remain respected. Otherwise, we default to TERMIOS except for a few
187 * systems that require something different.
188 *
189 * Note: we do not use SGTTY unless it's defined by the configuration. We
190 * may eventually opt to remove it's use entirely.
191 */
192
193 #if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY)
194
195 # if defined(_LIBC)
196 # undef TERMIOS
197 # define TERMIO
198 # undef SGTTY
199 /*
200 * We know that VMS, MSDOS, VXWORKS, NETWARE use entirely other mechanisms.
201 * MAC_OS_GUSI_SOURCE should probably go away, but that needs to be confirmed.
202 */
203 # elif !defined(OPENSSL_SYS_VMS) \
204 && !defined(OPENSSL_SYS_MSDOS) \
205 && !defined(OPENSSL_SYS_MACINTOSH_CLASSIC) \
206 && !defined(MAC_OS_GUSI_SOURCE) \
207 && !defined(OPENSSL_SYS_VXWORKS) \
208 && !defined(OPENSSL_SYS_NETWARE)
209 # define TERMIOS
210 # undef TERMIO
211 # undef SGTTY
212 # endif
213
214 #endif
215
216 #ifdef TERMIOS
217 # include <termios.h>
218 # define TTY_STRUCT struct termios
219 # define TTY_FLAGS c_lflag
220 # define TTY_get(tty,data) tcgetattr(tty,data)
221 # define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data)
222 #endif
223
224 #ifdef TERMIO
225 # include <termio.h>
226 # define TTY_STRUCT struct termio
227 # define TTY_FLAGS c_lflag
228 # define TTY_get(tty,data) ioctl(tty,TCGETA,data)
229 # define TTY_set(tty,data) ioctl(tty,TCSETA,data)
230 #endif
231
232 #ifdef SGTTY
233 # include <sgtty.h>
234 # define TTY_STRUCT struct sgttyb
235 # define TTY_FLAGS sg_flags
236 # define TTY_get(tty,data) ioctl(tty,TIOCGETP,data)
237 # define TTY_set(tty,data) ioctl(tty,TIOCSETP,data)
238 #endif
239
240 #if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MACINTOSH_CLASSIC) && !defined(OPENSSL_SYS_SUNOS)
241 # include <sys/ioctl.h>
242 #endif
243
244 #ifdef OPENSSL_SYS_MSDOS
245 # include <conio.h>
246 #endif
247
248 #ifdef OPENSSL_SYS_VMS
249 # include <ssdef.h>
250 # include <iodef.h>
251 # include <ttdef.h>
252 # include <descrip.h>
253 struct IOSB {
254 short iosb$w_value;
255 short iosb$w_count;
256 long iosb$l_info;
257 };
258 #endif
259
260 #ifdef OPENSSL_SYS_SUNOS
261 typedef int sig_atomic_t;
262 #endif
263
264 #if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(MAC_OS_GUSI_SOURCE) || defined(OPENSSL_SYS_NETWARE)
265 /*
266 * This one needs work. As a matter of fact the code is unoperational
267 * and this is only a trick to get it compiled.
268 * <appro@fy.chalmers.se>
269 */
270 # define TTY_STRUCT int
271 #endif
272
273 #ifndef NX509_SIG
274 # define NX509_SIG 32
275 #endif
276
277 /* Define globals. They are protected by a lock */
278 #ifdef SIGACTION
279 static struct sigaction savsig[NX509_SIG];
280 #else
281 static void (*savsig[NX509_SIG]) (int);
282 #endif
283
284 #ifdef OPENSSL_SYS_VMS
285 static struct IOSB iosb;
286 static $DESCRIPTOR(terminal, "TT");
287 static long tty_orig[3], tty_new[3]; /* XXX Is there any guarantee that this
288 * will always suffice for the actual
289 * structures? */
290 static long status;
291 static unsigned short channel = 0;
292 #else
293 # if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__)
294 static TTY_STRUCT tty_orig, tty_new;
295 # endif
296 #endif
297 static FILE *tty_in, *tty_out;
298 static int is_a_tty;
299
300 /* Declare static functions */
301 #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
302 static int read_till_nl(FILE *);
303 static void recsig(int);
304 static void pushsig(void);
305 static void popsig(void);
306 #endif
307 #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16)
308 static int noecho_fgets(char *buf, int size, FILE *tty);
309 #endif
310 static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl);
311
312 static int read_string(UI *ui, UI_STRING *uis);
313 static int write_string(UI *ui, UI_STRING *uis);
314
315 static int open_console(UI *ui);
316 static int echo_console(UI *ui);
317 static int noecho_console(UI *ui);
318 static int close_console(UI *ui);
319
320 static UI_METHOD ui_openssl = {
321 "OpenSSL default user interface",
322 open_console,
323 write_string,
324 NULL, /* No flusher is needed for command lines */
325 read_string,
326 close_console,
327 NULL
328 };
329
330 /* The method with all the built-in thingies */
UI_OpenSSL(void)331 UI_METHOD *UI_OpenSSL(void)
332 {
333 return &ui_openssl;
334 }
335
336 /*
337 * The following function makes sure that info and error strings are printed
338 * before any prompt.
339 */
write_string(UI * ui,UI_STRING * uis)340 static int write_string(UI *ui, UI_STRING *uis)
341 {
342 switch (UI_get_string_type(uis)) {
343 case UIT_ERROR:
344 case UIT_INFO:
345 fputs(UI_get0_output_string(uis), tty_out);
346 fflush(tty_out);
347 break;
348 default:
349 break;
350 }
351 return 1;
352 }
353
read_string(UI * ui,UI_STRING * uis)354 static int read_string(UI *ui, UI_STRING *uis)
355 {
356 int ok = 0;
357
358 switch (UI_get_string_type(uis)) {
359 case UIT_BOOLEAN:
360 fputs(UI_get0_output_string(uis), tty_out);
361 fputs(UI_get0_action_string(uis), tty_out);
362 fflush(tty_out);
363 return read_string_inner(ui, uis,
364 UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO,
365 0);
366 case UIT_PROMPT:
367 fputs(UI_get0_output_string(uis), tty_out);
368 fflush(tty_out);
369 return read_string_inner(ui, uis,
370 UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO,
371 1);
372 case UIT_VERIFY:
373 fprintf(tty_out, "Verifying - %s", UI_get0_output_string(uis));
374 fflush(tty_out);
375 if ((ok = read_string_inner(ui, uis,
376 UI_get_input_flags(uis) &
377 UI_INPUT_FLAG_ECHO, 1)) <= 0)
378 return ok;
379 if (strcmp(UI_get0_result_string(uis), UI_get0_test_string(uis)) != 0) {
380 fprintf(tty_out, "Verify failure\n");
381 fflush(tty_out);
382 return 0;
383 }
384 break;
385 default:
386 break;
387 }
388 return 1;
389 }
390
391 #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
392 /* Internal functions to read a string without echoing */
read_till_nl(FILE * in)393 static int read_till_nl(FILE *in)
394 {
395 # define SIZE 4
396 char buf[SIZE + 1];
397
398 do {
399 if (!fgets(buf, SIZE, in))
400 return 0;
401 } while (strchr(buf, '\n') == NULL);
402 return 1;
403 }
404
405 static volatile sig_atomic_t intr_signal;
406 #endif
407
read_string_inner(UI * ui,UI_STRING * uis,int echo,int strip_nl)408 static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl)
409 {
410 static int ps;
411 int ok;
412 char result[BUFSIZ];
413 int maxsize = BUFSIZ - 1;
414 #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
415 char *p;
416
417 intr_signal = 0;
418 ok = 0;
419 ps = 0;
420
421 pushsig();
422 ps = 1;
423
424 if (!echo && !noecho_console(ui))
425 goto error;
426 ps = 2;
427
428 result[0] = '\0';
429 # ifdef OPENSSL_SYS_MSDOS
430 if (!echo) {
431 noecho_fgets(result, maxsize, tty_in);
432 p = result; /* FIXME: noecho_fgets doesn't return errors */
433 } else
434 p = fgets(result, maxsize, tty_in);
435 # else
436 p = fgets(result, maxsize, tty_in);
437 # endif
438 if (!p)
439 goto error;
440 if (feof(tty_in))
441 goto error;
442 if (ferror(tty_in))
443 goto error;
444 if ((p = (char *)strchr(result, '\n')) != NULL) {
445 if (strip_nl)
446 *p = '\0';
447 } else if (!read_till_nl(tty_in))
448 goto error;
449 if (UI_set_result(ui, uis, result) >= 0)
450 ok = 1;
451
452 error:
453 if (intr_signal == SIGINT)
454 ok = -1;
455 if (!echo)
456 fprintf(tty_out, "\n");
457 if (ps >= 2 && !echo && !echo_console(ui))
458 ok = 0;
459
460 if (ps >= 1)
461 popsig();
462 #else
463 ok = 1;
464 #endif
465
466 OPENSSL_cleanse(result, BUFSIZ);
467 return ok;
468 }
469
470 /* Internal functions to open, handle and close a channel to the console. */
open_console(UI * ui)471 static int open_console(UI *ui)
472 {
473 CRYPTO_w_lock(CRYPTO_LOCK_UI);
474 is_a_tty = 1;
475
476 #if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS)
477 tty_in = stdin;
478 tty_out = stderr;
479 #else
480 # ifdef OPENSSL_SYS_MSDOS
481 # define DEV_TTY "con"
482 # else
483 # define DEV_TTY "/dev/tty"
484 # endif
485 if ((tty_in = fopen(DEV_TTY, "r")) == NULL)
486 tty_in = stdin;
487 if ((tty_out = fopen(DEV_TTY, "w")) == NULL)
488 tty_out = stderr;
489 #endif
490
491 #if defined(TTY_get) && !defined(OPENSSL_SYS_VMS)
492 if (TTY_get(fileno(tty_in), &tty_orig) == -1) {
493 # ifdef ENOTTY
494 if (errno == ENOTTY)
495 is_a_tty = 0;
496 else
497 # endif
498 # ifdef EINVAL
499 /*
500 * Ariel Glenn ariel@columbia.edu reports that solaris can return
501 * EINVAL instead. This should be ok
502 */
503 if (errno == EINVAL)
504 is_a_tty = 0;
505 else
506 # endif
507 return 0;
508 }
509 #endif
510 #ifdef OPENSSL_SYS_VMS
511 status = sys$assign(&terminal, &channel, 0, 0);
512 if (status != SS$_NORMAL)
513 return 0;
514 status =
515 sys$qiow(0, channel, IO$_SENSEMODE, &iosb, 0, 0, tty_orig, 12, 0, 0,
516 0, 0);
517 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
518 return 0;
519 #endif
520 return 1;
521 }
522
noecho_console(UI * ui)523 static int noecho_console(UI *ui)
524 {
525 #ifdef TTY_FLAGS
526 memcpy(&(tty_new), &(tty_orig), sizeof(tty_orig));
527 tty_new.TTY_FLAGS &= ~ECHO;
528 #endif
529
530 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
531 if (is_a_tty && (TTY_set(fileno(tty_in), &tty_new) == -1))
532 return 0;
533 #endif
534 #ifdef OPENSSL_SYS_VMS
535 tty_new[0] = tty_orig[0];
536 tty_new[1] = tty_orig[1] | TT$M_NOECHO;
537 tty_new[2] = tty_orig[2];
538 status =
539 sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12, 0, 0, 0,
540 0);
541 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
542 return 0;
543 #endif
544 return 1;
545 }
546
echo_console(UI * ui)547 static int echo_console(UI *ui)
548 {
549 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
550 memcpy(&(tty_new), &(tty_orig), sizeof(tty_orig));
551 tty_new.TTY_FLAGS |= ECHO;
552 #endif
553
554 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
555 if (is_a_tty && (TTY_set(fileno(tty_in), &tty_new) == -1))
556 return 0;
557 #endif
558 #ifdef OPENSSL_SYS_VMS
559 tty_new[0] = tty_orig[0];
560 tty_new[1] = tty_orig[1] & ~TT$M_NOECHO;
561 tty_new[2] = tty_orig[2];
562 status =
563 sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12, 0, 0, 0,
564 0);
565 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
566 return 0;
567 #endif
568 return 1;
569 }
570
close_console(UI * ui)571 static int close_console(UI *ui)
572 {
573 if (tty_in != stdin)
574 fclose(tty_in);
575 if (tty_out != stderr)
576 fclose(tty_out);
577 #ifdef OPENSSL_SYS_VMS
578 status = sys$dassgn(channel);
579 #endif
580 CRYPTO_w_unlock(CRYPTO_LOCK_UI);
581
582 return 1;
583 }
584
585 #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
586 /* Internal functions to handle signals and act on them */
pushsig(void)587 static void pushsig(void)
588 {
589 # ifndef OPENSSL_SYS_WIN32
590 int i;
591 # endif
592 # ifdef SIGACTION
593 struct sigaction sa;
594
595 memset(&sa, 0, sizeof sa);
596 sa.sa_handler = recsig;
597 # endif
598
599 # ifdef OPENSSL_SYS_WIN32
600 savsig[SIGABRT] = signal(SIGABRT, recsig);
601 savsig[SIGFPE] = signal(SIGFPE, recsig);
602 savsig[SIGILL] = signal(SIGILL, recsig);
603 savsig[SIGINT] = signal(SIGINT, recsig);
604 savsig[SIGSEGV] = signal(SIGSEGV, recsig);
605 savsig[SIGTERM] = signal(SIGTERM, recsig);
606 # else
607 for (i = 1; i < NX509_SIG; i++) {
608 # ifdef SIGUSR1
609 if (i == SIGUSR1)
610 continue;
611 # endif
612 # ifdef SIGUSR2
613 if (i == SIGUSR2)
614 continue;
615 # endif
616 # ifdef SIGKILL
617 if (i == SIGKILL) /* We can't make any action on that. */
618 continue;
619 # endif
620 # ifdef SIGACTION
621 sigaction(i, &sa, &savsig[i]);
622 # else
623 savsig[i] = signal(i, recsig);
624 # endif
625 }
626 # endif
627
628 # ifdef SIGWINCH
629 signal(SIGWINCH, SIG_DFL);
630 # endif
631 }
632
popsig(void)633 static void popsig(void)
634 {
635 # ifdef OPENSSL_SYS_WIN32
636 signal(SIGABRT, savsig[SIGABRT]);
637 signal(SIGFPE, savsig[SIGFPE]);
638 signal(SIGILL, savsig[SIGILL]);
639 signal(SIGINT, savsig[SIGINT]);
640 signal(SIGSEGV, savsig[SIGSEGV]);
641 signal(SIGTERM, savsig[SIGTERM]);
642 # else
643 int i;
644 for (i = 1; i < NX509_SIG; i++) {
645 # ifdef SIGUSR1
646 if (i == SIGUSR1)
647 continue;
648 # endif
649 # ifdef SIGUSR2
650 if (i == SIGUSR2)
651 continue;
652 # endif
653 # ifdef SIGACTION
654 sigaction(i, &savsig[i], NULL);
655 # else
656 signal(i, savsig[i]);
657 # endif
658 }
659 # endif
660 }
661
recsig(int i)662 static void recsig(int i)
663 {
664 intr_signal = i;
665 }
666 #endif
667
668 /* Internal functions specific for Windows */
669 #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
noecho_fgets(char * buf,int size,FILE * tty)670 static int noecho_fgets(char *buf, int size, FILE *tty)
671 {
672 int i;
673 char *p;
674
675 p = buf;
676 for (;;) {
677 if (size == 0) {
678 *p = '\0';
679 break;
680 }
681 size--;
682 # ifdef WIN16TTY
683 i = _inchar();
684 # elif defined(_WIN32)
685 i = _getch();
686 # else
687 i = getch();
688 # endif
689 if (i == '\r')
690 i = '\n';
691 *(p++) = i;
692 if (i == '\n') {
693 *p = '\0';
694 break;
695 }
696 }
697 # ifdef WIN_CONSOLE_BUG
698 /*
699 * Win95 has several evil console bugs: one of these is that the last
700 * character read using getch() is passed to the next read: this is
701 * usually a CR so this can be trouble. No STDIO fix seems to work but
702 * flushing the console appears to do the trick.
703 */
704 {
705 HANDLE inh;
706 inh = GetStdHandle(STD_INPUT_HANDLE);
707 FlushConsoleInputBuffer(inh);
708 }
709 # endif
710 return (strlen(buf));
711 }
712 #endif
713