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/* need for #define _POSIX_C_SOURCE arises whenever you pass -ansi to gcc 121 * [maybe others?], because it masks interfaces not discussed in standard, 122 * sigaction and fileno included. -pedantic would be more appropriate for 123 * the intended purposes, but we can't prevent users from adding -ansi. 124 */ 125#define _POSIX_C_SOURCE 1 126#include <signal.h> 127#include <stdio.h> 128#include <string.h> 129#include <errno.h> 130 131#if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) 132# ifdef OPENSSL_UNISTD 133# include OPENSSL_UNISTD 134# else 135# include <unistd.h> 136# endif 137/* If unistd.h defines _POSIX_VERSION, we conclude that we 138 * are on a POSIX system and have sigaction and termios. */ 139# if defined(_POSIX_VERSION) 140 141# define SIGACTION 142# if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY) 143# define TERMIOS 144# endif 145 146# endif 147#endif 148 149#ifdef WIN16TTY 150# undef OPENSSL_SYS_WIN16 151# undef WIN16 152# undef _WINDOWS 153# include <graph.h> 154#endif 155 156/* 06-Apr-92 Luke Brennan Support for VMS */ 157#include "ui_locl.h" 158#include "cryptlib.h" 159 160#ifdef OPENSSL_SYS_VMS /* prototypes for sys$whatever */ 161# include <starlet.h> 162# ifdef __DECC 163# pragma message disable DOLLARID 164# endif 165#endif 166 167#ifdef WIN_CONSOLE_BUG 168# include <windows.h> 169#ifndef OPENSSL_SYS_WINCE 170# include <wincon.h> 171#endif 172#endif 173 174 175/* There are 5 types of terminal interface supported, 176 * TERMIO, TERMIOS, VMS, MSDOS and SGTTY 177 */ 178 179#if defined(__sgi) && !defined(TERMIOS) 180# define TERMIOS 181# undef TERMIO 182# undef SGTTY 183#endif 184 185#if defined(linux) && !defined(TERMIO) 186# undef TERMIOS 187# define TERMIO 188# undef SGTTY 189#endif 190 191#ifdef _LIBC 192# undef TERMIOS 193# define TERMIO 194# undef SGTTY 195#endif 196 197#if !defined(TERMIO) && !defined(TERMIOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_MACINTOSH_CLASSIC) && !defined(MAC_OS_GUSI_SOURCE) 198# undef TERMIOS 199# undef TERMIO 200# define SGTTY 201#endif 202 203#if defined(OPENSSL_SYS_VXWORKS) 204#undef TERMIOS 205#undef TERMIO 206#undef SGTTY 207#endif 208 209#if defined(OPENSSL_SYS_NETWARE) 210#undef TERMIOS 211#undef TERMIO 212#undef SGTTY 213#endif 214 215#ifdef TERMIOS 216# include <termios.h> 217# define TTY_STRUCT struct termios 218# define TTY_FLAGS c_lflag 219# define TTY_get(tty,data) tcgetattr(tty,data) 220# define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data) 221#endif 222 223#ifdef TERMIO 224# include <termio.h> 225# define TTY_STRUCT struct termio 226# define TTY_FLAGS c_lflag 227# define TTY_get(tty,data) ioctl(tty,TCGETA,data) 228# define TTY_set(tty,data) ioctl(tty,TCSETA,data) 229#endif 230 231#ifdef SGTTY 232# include <sgtty.h> 233# define TTY_STRUCT struct sgttyb 234# define TTY_FLAGS sg_flags 235# define TTY_get(tty,data) ioctl(tty,TIOCGETP,data) 236# define TTY_set(tty,data) ioctl(tty,TIOCSETP,data) 237#endif 238 239#if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MACINTOSH_CLASSIC) && !defined(OPENSSL_SYS_SUNOS) 240# include <sys/ioctl.h> 241#endif 242 243#ifdef OPENSSL_SYS_MSDOS 244# include <conio.h> 245#endif 246 247#ifdef OPENSSL_SYS_VMS 248# include <ssdef.h> 249# include <iodef.h> 250# include <ttdef.h> 251# include <descrip.h> 252struct IOSB { 253 short iosb$w_value; 254 short iosb$w_count; 255 long iosb$l_info; 256 }; 257#endif 258 259#ifdef OPENSSL_SYS_SUNOS 260 typedef int sig_atomic_t; 261#endif 262 263#if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(MAC_OS_GUSI_SOURCE) || defined(OPENSSL_SYS_NETWARE) 264/* 265 * This one needs work. As a matter of fact the code is unoperational 266 * and this is only a trick to get it compiled. 267 * <appro@fy.chalmers.se> 268 */ 269# define TTY_STRUCT int 270#endif 271 272#ifndef NX509_SIG 273# define NX509_SIG 32 274#endif 275 276 277/* Define globals. They are protected by a lock */ 278#ifdef SIGACTION 279static struct sigaction savsig[NX509_SIG]; 280#else 281static void (*savsig[NX509_SIG])(int ); 282#endif 283 284#ifdef OPENSSL_SYS_VMS 285static struct IOSB iosb; 286static $DESCRIPTOR(terminal,"TT"); 287static long tty_orig[3], tty_new[3]; /* XXX Is there any guarantee that this will always suffice for the actual structures? */ 288static long status; 289static unsigned short channel = 0; 290#else 291#if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__) 292static TTY_STRUCT tty_orig,tty_new; 293#endif 294#endif 295static FILE *tty_in, *tty_out; 296static int is_a_tty; 297 298/* Declare static functions */ 299#if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 300static void read_till_nl(FILE *); 301static void recsig(int); 302static void pushsig(void); 303static void popsig(void); 304#endif 305#if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16) 306static int noecho_fgets(char *buf, int size, FILE *tty); 307#endif 308static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl); 309 310static int read_string(UI *ui, UI_STRING *uis); 311static int write_string(UI *ui, UI_STRING *uis); 312 313static int open_console(UI *ui); 314static int echo_console(UI *ui); 315static int noecho_console(UI *ui); 316static int close_console(UI *ui); 317 318static UI_METHOD ui_openssl = 319 { 320 "OpenSSL default user interface", 321 open_console, 322 write_string, 323 NULL, /* No flusher is needed for command lines */ 324 read_string, 325 close_console, 326 NULL 327 }; 328 329/* The method with all the built-in thingies */ 330UI_METHOD *UI_OpenSSL(void) 331 { 332 return &ui_openssl; 333 } 334 335/* The following function makes sure that info and error strings are printed 336 before any prompt. */ 337static int write_string(UI *ui, UI_STRING *uis) 338 { 339 switch (UI_get_string_type(uis)) 340 { 341 case UIT_ERROR: 342 case UIT_INFO: 343 fputs(UI_get0_output_string(uis), tty_out); 344 fflush(tty_out); 345 break; 346 default: 347 break; 348 } 349 return 1; 350 } 351 352static int read_string(UI *ui, UI_STRING *uis) 353 { 354 int ok = 0; 355 356 switch (UI_get_string_type(uis)) 357 { 358 case UIT_BOOLEAN: 359 fputs(UI_get0_output_string(uis), tty_out); 360 fputs(UI_get0_action_string(uis), tty_out); 361 fflush(tty_out); 362 return read_string_inner(ui, uis, 363 UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 0); 364 case UIT_PROMPT: 365 fputs(UI_get0_output_string(uis), tty_out); 366 fflush(tty_out); 367 return read_string_inner(ui, uis, 368 UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 1); 369 case UIT_VERIFY: 370 fprintf(tty_out,"Verifying - %s", 371 UI_get0_output_string(uis)); 372 fflush(tty_out); 373 if ((ok = read_string_inner(ui, uis, 374 UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 1)) <= 0) 375 return ok; 376 if (strcmp(UI_get0_result_string(uis), 377 UI_get0_test_string(uis)) != 0) 378 { 379 fprintf(tty_out,"Verify failure\n"); 380 fflush(tty_out); 381 return 0; 382 } 383 break; 384 default: 385 break; 386 } 387 return 1; 388 } 389 390 391#if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 392/* Internal functions to read a string without echoing */ 393static void read_till_nl(FILE *in) 394 { 395#define SIZE 4 396 char buf[SIZE+1]; 397 398 do { 399 fgets(buf,SIZE,in); 400 } while (strchr(buf,'\n') == NULL); 401 } 402 403static volatile sig_atomic_t intr_signal; 404#endif 405 406static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl) 407 { 408 static int ps; 409 int ok; 410 char result[BUFSIZ]; 411 int maxsize = BUFSIZ-1; 412#if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 413 char *p; 414 415 intr_signal=0; 416 ok=0; 417 ps=0; 418 419 pushsig(); 420 ps=1; 421 422 if (!echo && !noecho_console(ui)) 423 goto error; 424 ps=2; 425 426 result[0]='\0'; 427#ifdef OPENSSL_SYS_MSDOS 428 if (!echo) 429 { 430 noecho_fgets(result,maxsize,tty_in); 431 p=result; /* FIXME: noecho_fgets doesn't return errors */ 432 } 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)) goto error; 441 if (ferror(tty_in)) goto error; 442 if ((p=(char *)strchr(result,'\n')) != NULL) 443 { 444 if (strip_nl) 445 *p='\0'; 446 } 447 else 448 read_till_nl(tty_in); 449 if (UI_set_result(ui, uis, result) >= 0) 450 ok=1; 451 452error: 453 if (intr_signal == SIGINT) 454 ok=-1; 455 if (!echo) fprintf(tty_out,"\n"); 456 if (ps >= 2 && !echo && !echo_console(ui)) 457 ok=0; 458 459 if (ps >= 1) 460 popsig(); 461#else 462 ok=1; 463#endif 464 465 OPENSSL_cleanse(result,BUFSIZ); 466 return ok; 467 } 468 469 470/* Internal functions to open, handle and close a channel to the console. */ 471static 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) 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 { 494#ifdef ENOTTY 495 if (errno == ENOTTY) 496 is_a_tty=0; 497 else 498#endif 499#ifdef EINVAL 500 /* Ariel Glenn ariel@columbia.edu reports that solaris 501 * can return EINVAL instead. This should be ok */ 502 if (errno == EINVAL) 503 is_a_tty=0; 504 else 505#endif 506 return 0; 507 } 508#endif 509#ifdef OPENSSL_SYS_VMS 510 status = sys$assign(&terminal,&channel,0,0); 511 if (status != SS$_NORMAL) 512 return 0; 513 status=sys$qiow(0,channel,IO$_SENSEMODE,&iosb,0,0,tty_orig,12,0,0,0,0); 514 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) 515 return 0; 516#endif 517 return 1; 518 } 519 520static int noecho_console(UI *ui) 521 { 522#ifdef TTY_FLAGS 523 memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig)); 524 tty_new.TTY_FLAGS &= ~ECHO; 525#endif 526 527#if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) 528 if (is_a_tty && (TTY_set(fileno(tty_in),&tty_new) == -1)) 529 return 0; 530#endif 531#ifdef OPENSSL_SYS_VMS 532 tty_new[0] = tty_orig[0]; 533 tty_new[1] = tty_orig[1] | TT$M_NOECHO; 534 tty_new[2] = tty_orig[2]; 535 status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0,tty_new,12,0,0,0,0); 536 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) 537 return 0; 538#endif 539 return 1; 540 } 541 542static int echo_console(UI *ui) 543 { 544#if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) 545 memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig)); 546 tty_new.TTY_FLAGS |= ECHO; 547#endif 548 549#if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) 550 if (is_a_tty && (TTY_set(fileno(tty_in),&tty_new) == -1)) 551 return 0; 552#endif 553#ifdef OPENSSL_SYS_VMS 554 tty_new[0] = tty_orig[0]; 555 tty_new[1] = tty_orig[1] & ~TT$M_NOECHO; 556 tty_new[2] = tty_orig[2]; 557 status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0,tty_new,12,0,0,0,0); 558 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) 559 return 0; 560#endif 561 return 1; 562 } 563 564static int close_console(UI *ui) 565 { 566 if (tty_in != stdin) fclose(tty_in); 567 if (tty_out != stderr) fclose(tty_out); 568#ifdef OPENSSL_SYS_VMS 569 status = sys$dassgn(channel); 570#endif 571 CRYPTO_w_unlock(CRYPTO_LOCK_UI); 572 573 return 1; 574 } 575 576 577#if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 578/* Internal functions to handle signals and act on them */ 579static void pushsig(void) 580 { 581#ifndef OPENSSL_SYS_WIN32 582 int i; 583#endif 584#ifdef SIGACTION 585 struct sigaction sa; 586 587 memset(&sa,0,sizeof sa); 588 sa.sa_handler=recsig; 589#endif 590 591#ifdef OPENSSL_SYS_WIN32 592 savsig[SIGABRT]=signal(SIGABRT,recsig); 593 savsig[SIGFPE]=signal(SIGFPE,recsig); 594 savsig[SIGILL]=signal(SIGILL,recsig); 595 savsig[SIGINT]=signal(SIGINT,recsig); 596 savsig[SIGSEGV]=signal(SIGSEGV,recsig); 597 savsig[SIGTERM]=signal(SIGTERM,recsig); 598#else 599 for (i=1; i<NX509_SIG; i++) 600 { 601#ifdef SIGUSR1 602 if (i == SIGUSR1) 603 continue; 604#endif 605#ifdef SIGUSR2 606 if (i == SIGUSR2) 607 continue; 608#endif 609#ifdef SIGKILL 610 if (i == SIGKILL) /* We can't make any action on that. */ 611 continue; 612#endif 613#ifdef SIGACTION 614 sigaction(i,&sa,&savsig[i]); 615#else 616 savsig[i]=signal(i,recsig); 617#endif 618 } 619#endif 620 621#ifdef SIGWINCH 622 signal(SIGWINCH,SIG_DFL); 623#endif 624 } 625 626static void popsig(void) 627 { 628#ifdef OPENSSL_SYS_WIN32 629 signal(SIGABRT,savsig[SIGABRT]); 630 signal(SIGFPE,savsig[SIGFPE]); 631 signal(SIGILL,savsig[SIGILL]); 632 signal(SIGINT,savsig[SIGINT]); 633 signal(SIGSEGV,savsig[SIGSEGV]); 634 signal(SIGTERM,savsig[SIGTERM]); 635#else 636 int i; 637 for (i=1; i<NX509_SIG; i++) 638 { 639#ifdef SIGUSR1 640 if (i == SIGUSR1) 641 continue; 642#endif 643#ifdef SIGUSR2 644 if (i == SIGUSR2) 645 continue; 646#endif 647#ifdef SIGACTION 648 sigaction(i,&savsig[i],NULL); 649#else 650 signal(i,savsig[i]); 651#endif 652 } 653#endif 654 } 655 656static void recsig(int i) 657 { 658 intr_signal=i; 659 } 660#endif 661 662/* Internal functions specific for Windows */ 663#if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 664static int noecho_fgets(char *buf, int size, FILE *tty) 665 { 666 int i; 667 char *p; 668 669 p=buf; 670 for (;;) 671 { 672 if (size == 0) 673 { 674 *p='\0'; 675 break; 676 } 677 size--; 678#ifdef WIN16TTY 679 i=_inchar(); 680#else 681 i=getch(); 682#endif 683 if (i == '\r') i='\n'; 684 *(p++)=i; 685 if (i == '\n') 686 { 687 *p='\0'; 688 break; 689 } 690 } 691#ifdef WIN_CONSOLE_BUG 692/* Win95 has several evil console bugs: one of these is that the 693 * last character read using getch() is passed to the next read: this is 694 * usually a CR so this can be trouble. No STDIO fix seems to work but 695 * flushing the console appears to do the trick. 696 */ 697 { 698 HANDLE inh; 699 inh = GetStdHandle(STD_INPUT_HANDLE); 700 FlushConsoleInputBuffer(inh); 701 } 702#endif 703 return(strlen(buf)); 704 } 705#endif 706