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