ui_openssl.c revision 296465
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#define _POSIX_C_SOURCE 1 128#include <signal.h> 129#include <stdio.h> 130#include <string.h> 131#include <errno.h> 132 133#if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) 134# ifdef OPENSSL_UNISTD 135# include OPENSSL_UNISTD 136# else 137# include <unistd.h> 138# endif 139/* 140 * If unistd.h defines _POSIX_VERSION, we conclude that we are on a POSIX 141 * system and have sigaction and termios. 142 */ 143# if defined(_POSIX_VERSION) 144 145# define SIGACTION 146# if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY) 147# define TERMIOS 148# endif 149 150# endif 151#endif 152 153#ifdef WIN16TTY 154# undef OPENSSL_SYS_WIN16 155# undef WIN16 156# undef _WINDOWS 157# include <graph.h> 158#endif 159 160/* 06-Apr-92 Luke Brennan Support for VMS */ 161#include "ui_locl.h" 162#include "cryptlib.h" 163 164#ifdef OPENSSL_SYS_VMS /* prototypes for sys$whatever */ 165# include <starlet.h> 166# ifdef __DECC 167# pragma message disable DOLLARID 168# endif 169#endif 170 171#ifdef WIN_CONSOLE_BUG 172# include <windows.h> 173# ifndef OPENSSL_SYS_WINCE 174# include <wincon.h> 175# endif 176#endif 177 178/* 179 * There are 5 types of terminal interface supported, TERMIO, TERMIOS, VMS, 180 * MSDOS and SGTTY 181 */ 182 183#if defined(__sgi) && !defined(TERMIOS) 184# define TERMIOS 185# undef TERMIO 186# undef SGTTY 187#endif 188 189#if defined(linux) && !defined(TERMIO) 190# undef TERMIOS 191# define TERMIO 192# undef SGTTY 193#endif 194 195#ifdef _LIBC 196# undef TERMIOS 197# define TERMIO 198# undef SGTTY 199#endif 200 201#if !defined(TERMIO) && !defined(TERMIOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_MACINTOSH_CLASSIC) && !defined(MAC_OS_GUSI_SOURCE) 202# undef TERMIOS 203# undef TERMIO 204# define SGTTY 205#endif 206 207#if defined(OPENSSL_SYS_VXWORKS) 208# undef TERMIOS 209# undef TERMIO 210# undef SGTTY 211#endif 212 213#if defined(OPENSSL_SYS_NETWARE) 214# undef TERMIOS 215# undef TERMIO 216# undef SGTTY 217#endif 218 219#ifdef TERMIOS 220# include <termios.h> 221# define TTY_STRUCT struct termios 222# define TTY_FLAGS c_lflag 223# define TTY_get(tty,data) tcgetattr(tty,data) 224# define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data) 225#endif 226 227#ifdef TERMIO 228# include <termio.h> 229# define TTY_STRUCT struct termio 230# define TTY_FLAGS c_lflag 231# define TTY_get(tty,data) ioctl(tty,TCGETA,data) 232# define TTY_set(tty,data) ioctl(tty,TCSETA,data) 233#endif 234 235#ifdef SGTTY 236# include <sgtty.h> 237# define TTY_STRUCT struct sgttyb 238# define TTY_FLAGS sg_flags 239# define TTY_get(tty,data) ioctl(tty,TIOCGETP,data) 240# define TTY_set(tty,data) ioctl(tty,TIOCSETP,data) 241#endif 242 243#if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MACINTOSH_CLASSIC) && !defined(OPENSSL_SYS_SUNOS) 244# include <sys/ioctl.h> 245#endif 246 247#ifdef OPENSSL_SYS_MSDOS 248# include <conio.h> 249#endif 250 251#ifdef OPENSSL_SYS_VMS 252# include <ssdef.h> 253# include <iodef.h> 254# include <ttdef.h> 255# include <descrip.h> 256struct IOSB { 257 short iosb$w_value; 258 short iosb$w_count; 259 long iosb$l_info; 260}; 261#endif 262 263#ifdef OPENSSL_SYS_SUNOS 264typedef int sig_atomic_t; 265#endif 266 267#if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(MAC_OS_GUSI_SOURCE) || defined(OPENSSL_SYS_NETWARE) 268/* 269 * This one needs work. As a matter of fact the code is unoperational 270 * and this is only a trick to get it compiled. 271 * <appro@fy.chalmers.se> 272 */ 273# define TTY_STRUCT int 274#endif 275 276#ifndef NX509_SIG 277# define NX509_SIG 32 278#endif 279 280/* Define globals. They are protected by a lock */ 281#ifdef SIGACTION 282static struct sigaction savsig[NX509_SIG]; 283#else 284static void (*savsig[NX509_SIG]) (int); 285#endif 286 287#ifdef OPENSSL_SYS_VMS 288static struct IOSB iosb; 289static $DESCRIPTOR(terminal, "TT"); 290static long tty_orig[3], tty_new[3]; /* XXX Is there any guarantee that this 291 * will always suffice for the actual 292 * structures? */ 293static long status; 294static unsigned short channel = 0; 295#else 296# if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__) 297static TTY_STRUCT tty_orig, tty_new; 298# endif 299#endif 300static FILE *tty_in, *tty_out; 301static int is_a_tty; 302 303/* Declare static functions */ 304#if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 305static int read_till_nl(FILE *); 306static void recsig(int); 307static void pushsig(void); 308static void popsig(void); 309#endif 310#if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16) 311static int noecho_fgets(char *buf, int size, FILE *tty); 312#endif 313static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl); 314 315static int read_string(UI *ui, UI_STRING *uis); 316static int write_string(UI *ui, UI_STRING *uis); 317 318static int open_console(UI *ui); 319static int echo_console(UI *ui); 320static int noecho_console(UI *ui); 321static int close_console(UI *ui); 322 323static UI_METHOD ui_openssl = { 324 "OpenSSL default user interface", 325 open_console, 326 write_string, 327 NULL, /* No flusher is needed for command lines */ 328 read_string, 329 close_console, 330 NULL 331}; 332 333/* The method with all the built-in thingies */ 334UI_METHOD *UI_OpenSSL(void) 335{ 336 return &ui_openssl; 337} 338 339/* 340 * The following function makes sure that info and error strings are printed 341 * before any prompt. 342 */ 343static int write_string(UI *ui, UI_STRING *uis) 344{ 345 switch (UI_get_string_type(uis)) { 346 case UIT_ERROR: 347 case UIT_INFO: 348 fputs(UI_get0_output_string(uis), tty_out); 349 fflush(tty_out); 350 break; 351 default: 352 break; 353 } 354 return 1; 355} 356 357static int read_string(UI *ui, UI_STRING *uis) 358{ 359 int ok = 0; 360 361 switch (UI_get_string_type(uis)) { 362 case UIT_BOOLEAN: 363 fputs(UI_get0_output_string(uis), tty_out); 364 fputs(UI_get0_action_string(uis), tty_out); 365 fflush(tty_out); 366 return read_string_inner(ui, uis, 367 UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 368 0); 369 case UIT_PROMPT: 370 fputs(UI_get0_output_string(uis), tty_out); 371 fflush(tty_out); 372 return read_string_inner(ui, uis, 373 UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 374 1); 375 case UIT_VERIFY: 376 fprintf(tty_out, "Verifying - %s", UI_get0_output_string(uis)); 377 fflush(tty_out); 378 if ((ok = read_string_inner(ui, uis, 379 UI_get_input_flags(uis) & 380 UI_INPUT_FLAG_ECHO, 1)) <= 0) 381 return ok; 382 if (strcmp(UI_get0_result_string(uis), UI_get0_test_string(uis)) != 0) { 383 fprintf(tty_out, "Verify failure\n"); 384 fflush(tty_out); 385 return 0; 386 } 387 break; 388 default: 389 break; 390 } 391 return 1; 392} 393 394#if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 395/* Internal functions to read a string without echoing */ 396static int read_till_nl(FILE *in) 397{ 398# define SIZE 4 399 char buf[SIZE + 1]; 400 401 do { 402 if (!fgets(buf, SIZE, in)) 403 return 0; 404 } while (strchr(buf, '\n') == NULL); 405 return 1; 406} 407 408static volatile sig_atomic_t intr_signal; 409#endif 410 411static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl) 412{ 413 static int ps; 414 int ok; 415 char result[BUFSIZ]; 416 int maxsize = BUFSIZ - 1; 417#if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 418 char *p; 419 420 intr_signal = 0; 421 ok = 0; 422 ps = 0; 423 424 pushsig(); 425 ps = 1; 426 427 if (!echo && !noecho_console(ui)) 428 goto error; 429 ps = 2; 430 431 result[0] = '\0'; 432# ifdef OPENSSL_SYS_MSDOS 433 if (!echo) { 434 noecho_fgets(result, maxsize, tty_in); 435 p = result; /* FIXME: noecho_fgets doesn't return errors */ 436 } else 437 p = fgets(result, maxsize, tty_in); 438# else 439 p = fgets(result, maxsize, tty_in); 440# endif 441 if (!p) 442 goto error; 443 if (feof(tty_in)) 444 goto error; 445 if (ferror(tty_in)) 446 goto error; 447 if ((p = (char *)strchr(result, '\n')) != NULL) { 448 if (strip_nl) 449 *p = '\0'; 450 } else if (!read_till_nl(tty_in)) 451 goto error; 452 if (UI_set_result(ui, uis, result) >= 0) 453 ok = 1; 454 455 error: 456 if (intr_signal == SIGINT) 457 ok = -1; 458 if (!echo) 459 fprintf(tty_out, "\n"); 460 if (ps >= 2 && !echo && !echo_console(ui)) 461 ok = 0; 462 463 if (ps >= 1) 464 popsig(); 465#else 466 ok = 1; 467#endif 468 469 OPENSSL_cleanse(result, BUFSIZ); 470 return ok; 471} 472 473/* Internal functions to open, handle and close a channel to the console. */ 474static int open_console(UI *ui) 475{ 476 CRYPTO_w_lock(CRYPTO_LOCK_UI); 477 is_a_tty = 1; 478 479#if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_NETWARE) 480 tty_in = stdin; 481 tty_out = stderr; 482#else 483# ifdef OPENSSL_SYS_MSDOS 484# define DEV_TTY "con" 485# else 486# define DEV_TTY "/dev/tty" 487# endif 488 if ((tty_in = fopen(DEV_TTY, "r")) == NULL) 489 tty_in = stdin; 490 if ((tty_out = fopen(DEV_TTY, "w")) == NULL) 491 tty_out = stderr; 492#endif 493 494#if defined(TTY_get) && !defined(OPENSSL_SYS_VMS) 495 if (TTY_get(fileno(tty_in), &tty_orig) == -1) { 496# ifdef ENOTTY 497 if (errno == ENOTTY) 498 is_a_tty = 0; 499 else 500# endif 501# ifdef EINVAL 502 /* 503 * Ariel Glenn ariel@columbia.edu reports that solaris can return 504 * EINVAL instead. This should be ok 505 */ 506 if (errno == EINVAL) 507 is_a_tty = 0; 508 else 509# endif 510 return 0; 511 } 512#endif 513#ifdef OPENSSL_SYS_VMS 514 status = sys$assign(&terminal, &channel, 0, 0); 515 if (status != SS$_NORMAL) 516 return 0; 517 status = 518 sys$qiow(0, channel, IO$_SENSEMODE, &iosb, 0, 0, tty_orig, 12, 0, 0, 519 0, 0); 520 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) 521 return 0; 522#endif 523 return 1; 524} 525 526static int noecho_console(UI *ui) 527{ 528#ifdef TTY_FLAGS 529 memcpy(&(tty_new), &(tty_orig), sizeof(tty_orig)); 530 tty_new.TTY_FLAGS &= ~ECHO; 531#endif 532 533#if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) 534 if (is_a_tty && (TTY_set(fileno(tty_in), &tty_new) == -1)) 535 return 0; 536#endif 537#ifdef OPENSSL_SYS_VMS 538 tty_new[0] = tty_orig[0]; 539 tty_new[1] = tty_orig[1] | TT$M_NOECHO; 540 tty_new[2] = tty_orig[2]; 541 status = 542 sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12, 0, 0, 0, 543 0); 544 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) 545 return 0; 546#endif 547 return 1; 548} 549 550static int echo_console(UI *ui) 551{ 552#if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) 553 memcpy(&(tty_new), &(tty_orig), sizeof(tty_orig)); 554 tty_new.TTY_FLAGS |= ECHO; 555#endif 556 557#if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) 558 if (is_a_tty && (TTY_set(fileno(tty_in), &tty_new) == -1)) 559 return 0; 560#endif 561#ifdef OPENSSL_SYS_VMS 562 tty_new[0] = tty_orig[0]; 563 tty_new[1] = tty_orig[1] & ~TT$M_NOECHO; 564 tty_new[2] = tty_orig[2]; 565 status = 566 sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12, 0, 0, 0, 567 0); 568 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) 569 return 0; 570#endif 571 return 1; 572} 573 574static int close_console(UI *ui) 575{ 576 if (tty_in != stdin) 577 fclose(tty_in); 578 if (tty_out != stderr) 579 fclose(tty_out); 580#ifdef OPENSSL_SYS_VMS 581 status = sys$dassgn(channel); 582#endif 583 CRYPTO_w_unlock(CRYPTO_LOCK_UI); 584 585 return 1; 586} 587 588#if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 589/* Internal functions to handle signals and act on them */ 590static void pushsig(void) 591{ 592# ifndef OPENSSL_SYS_WIN32 593 int i; 594# endif 595# ifdef SIGACTION 596 struct sigaction sa; 597 598 memset(&sa, 0, sizeof sa); 599 sa.sa_handler = recsig; 600# endif 601 602# ifdef OPENSSL_SYS_WIN32 603 savsig[SIGABRT] = signal(SIGABRT, recsig); 604 savsig[SIGFPE] = signal(SIGFPE, recsig); 605 savsig[SIGILL] = signal(SIGILL, recsig); 606 savsig[SIGINT] = signal(SIGINT, recsig); 607 savsig[SIGSEGV] = signal(SIGSEGV, recsig); 608 savsig[SIGTERM] = signal(SIGTERM, recsig); 609# else 610 for (i = 1; i < NX509_SIG; i++) { 611# ifdef SIGUSR1 612 if (i == SIGUSR1) 613 continue; 614# endif 615# ifdef SIGUSR2 616 if (i == SIGUSR2) 617 continue; 618# endif 619# ifdef SIGKILL 620 if (i == SIGKILL) /* We can't make any action on that. */ 621 continue; 622# endif 623# ifdef SIGACTION 624 sigaction(i, &sa, &savsig[i]); 625# else 626 savsig[i] = signal(i, recsig); 627# endif 628 } 629# endif 630 631# ifdef SIGWINCH 632 signal(SIGWINCH, SIG_DFL); 633# endif 634} 635 636static void popsig(void) 637{ 638# ifdef OPENSSL_SYS_WIN32 639 signal(SIGABRT, savsig[SIGABRT]); 640 signal(SIGFPE, savsig[SIGFPE]); 641 signal(SIGILL, savsig[SIGILL]); 642 signal(SIGINT, savsig[SIGINT]); 643 signal(SIGSEGV, savsig[SIGSEGV]); 644 signal(SIGTERM, savsig[SIGTERM]); 645# else 646 int i; 647 for (i = 1; i < NX509_SIG; i++) { 648# ifdef SIGUSR1 649 if (i == SIGUSR1) 650 continue; 651# endif 652# ifdef SIGUSR2 653 if (i == SIGUSR2) 654 continue; 655# endif 656# ifdef SIGACTION 657 sigaction(i, &savsig[i], NULL); 658# else 659 signal(i, savsig[i]); 660# endif 661 } 662# endif 663} 664 665static void recsig(int i) 666{ 667 intr_signal = i; 668} 669#endif 670 671/* Internal functions specific for Windows */ 672#if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 673static int noecho_fgets(char *buf, int size, FILE *tty) 674{ 675 int i; 676 char *p; 677 678 p = buf; 679 for (;;) { 680 if (size == 0) { 681 *p = '\0'; 682 break; 683 } 684 size--; 685# ifdef WIN16TTY 686 i = _inchar(); 687# elif defined(_WIN32) 688 i = _getch(); 689# else 690 i = getch(); 691# endif 692 if (i == '\r') 693 i = '\n'; 694 *(p++) = i; 695 if (i == '\n') { 696 *p = '\0'; 697 break; 698 } 699 } 700# ifdef WIN_CONSOLE_BUG 701 /* 702 * Win95 has several evil console bugs: one of these is that the last 703 * character read using getch() is passed to the next read: this is 704 * usually a CR so this can be trouble. No STDIO fix seems to work but 705 * flushing the console appears to do the trick. 706 */ 707 { 708 HANDLE inh; 709 inh = GetStdHandle(STD_INPUT_HANDLE); 710 FlushConsoleInputBuffer(inh); 711 } 712# endif 713 return (strlen(buf)); 714} 715#endif 716