ui_openssl.c revision 340704
1/* crypto/ui/ui_openssl.c */ 2/* 3 * Written by Richard Levitte (richard@levitte.org) and others for the 4 * OpenSSL project 2001. 5 */ 6/* ==================================================================== 7 * Copyright (c) 2001-2018 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# ifdef OPENSSL_UNISTD 143# include OPENSSL_UNISTD 144# else 145# include <unistd.h> 146# endif 147/* 148 * If unistd.h defines _POSIX_VERSION, we conclude that we are on a POSIX 149 * system and have sigaction and termios. 150 */ 151# if defined(_POSIX_VERSION) 152 153# define SIGACTION 154# if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY) 155# define TERMIOS 156# endif 157 158# endif 159#endif 160 161#ifdef WIN16TTY 162# undef OPENSSL_SYS_WIN16 163# undef WIN16 164# undef _WINDOWS 165# include <graph.h> 166#endif 167 168/* 06-Apr-92 Luke Brennan Support for VMS */ 169#include "ui_locl.h" 170#include "cryptlib.h" 171 172#ifdef OPENSSL_SYS_VMS /* prototypes for sys$whatever */ 173# include <starlet.h> 174# ifdef __DECC 175# pragma message disable DOLLARID 176# endif 177#endif 178 179#ifdef WIN_CONSOLE_BUG 180# include <windows.h> 181# ifndef OPENSSL_SYS_WINCE 182# include <wincon.h> 183# endif 184#endif 185 186/* 187 * There are 5 types of terminal interface supported, TERMIO, TERMIOS, VMS, 188 * MSDOS and SGTTY. 189 * 190 * If someone defines one of the macros TERMIO, TERMIOS or SGTTY, it will 191 * remain respected. Otherwise, we default to TERMIOS except for a few 192 * systems that require something different. 193 * 194 * Note: we do not use SGTTY unless it's defined by the configuration. We 195 * may eventually opt to remove it's use entirely. 196 */ 197 198#if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY) 199 200# if defined(_LIBC) 201# undef TERMIOS 202# define TERMIO 203# undef SGTTY 204/* 205 * We know that VMS, MSDOS, VXWORKS, NETWARE use entirely other mechanisms. 206 * MAC_OS_GUSI_SOURCE should probably go away, but that needs to be confirmed. 207 */ 208# elif !defined(OPENSSL_SYS_VMS) \ 209 && !defined(OPENSSL_SYS_MSDOS) \ 210 && !defined(OPENSSL_SYS_MACINTOSH_CLASSIC) \ 211 && !defined(MAC_OS_GUSI_SOURCE) \ 212 && !defined(OPENSSL_SYS_VXWORKS) \ 213 && !defined(OPENSSL_SYS_NETWARE) 214# define TERMIOS 215# undef TERMIO 216# undef SGTTY 217# endif 218 219#endif 220 221#ifdef TERMIOS 222# include <termios.h> 223# define TTY_STRUCT struct termios 224# define TTY_FLAGS c_lflag 225# define TTY_get(tty,data) tcgetattr(tty,data) 226# define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data) 227#endif 228 229#ifdef TERMIO 230# include <termio.h> 231# define TTY_STRUCT struct termio 232# define TTY_FLAGS c_lflag 233# define TTY_get(tty,data) ioctl(tty,TCGETA,data) 234# define TTY_set(tty,data) ioctl(tty,TCSETA,data) 235#endif 236 237#ifdef SGTTY 238# include <sgtty.h> 239# define TTY_STRUCT struct sgttyb 240# define TTY_FLAGS sg_flags 241# define TTY_get(tty,data) ioctl(tty,TIOCGETP,data) 242# define TTY_set(tty,data) ioctl(tty,TIOCSETP,data) 243#endif 244 245#if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MACINTOSH_CLASSIC) && !defined(OPENSSL_SYS_SUNOS) 246# include <sys/ioctl.h> 247#endif 248 249#ifdef OPENSSL_SYS_MSDOS 250# include <conio.h> 251#endif 252 253#ifdef OPENSSL_SYS_VMS 254# include <ssdef.h> 255# include <iodef.h> 256# include <ttdef.h> 257# include <descrip.h> 258struct IOSB { 259 short iosb$w_value; 260 short iosb$w_count; 261 long iosb$l_info; 262}; 263#endif 264 265#ifdef OPENSSL_SYS_SUNOS 266typedef int sig_atomic_t; 267#endif 268 269#if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(MAC_OS_GUSI_SOURCE) || defined(OPENSSL_SYS_NETWARE) 270/* 271 * This one needs work. As a matter of fact the code is unoperational 272 * and this is only a trick to get it compiled. 273 * <appro@fy.chalmers.se> 274 */ 275# define TTY_STRUCT int 276#endif 277 278#ifndef NX509_SIG 279# define NX509_SIG 32 280#endif 281 282/* Define globals. They are protected by a lock */ 283#ifdef SIGACTION 284static struct sigaction savsig[NX509_SIG]; 285#else 286static void (*savsig[NX509_SIG]) (int); 287#endif 288 289#ifdef OPENSSL_SYS_VMS 290static struct IOSB iosb; 291static $DESCRIPTOR(terminal, "TT"); 292static long tty_orig[3], tty_new[3]; /* XXX Is there any guarantee that this 293 * will always suffice for the actual 294 * structures? */ 295static long status; 296static unsigned short channel = 0; 297#else 298# if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__) 299static TTY_STRUCT tty_orig, tty_new; 300# endif 301#endif 302static FILE *tty_in, *tty_out; 303static int is_a_tty; 304 305/* Declare static functions */ 306#if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 307static int read_till_nl(FILE *); 308static void recsig(int); 309static void pushsig(void); 310static void popsig(void); 311#endif 312#if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16) 313static int noecho_fgets(char *buf, int size, FILE *tty); 314#endif 315static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl); 316 317static int read_string(UI *ui, UI_STRING *uis); 318static int write_string(UI *ui, UI_STRING *uis); 319 320static int open_console(UI *ui); 321static int echo_console(UI *ui); 322static int noecho_console(UI *ui); 323static int close_console(UI *ui); 324 325static UI_METHOD ui_openssl = { 326 "OpenSSL default user interface", 327 open_console, 328 write_string, 329 NULL, /* No flusher is needed for command lines */ 330 read_string, 331 close_console, 332 NULL 333}; 334 335/* The method with all the built-in thingies */ 336UI_METHOD *UI_OpenSSL(void) 337{ 338 return &ui_openssl; 339} 340 341/* 342 * The following function makes sure that info and error strings are printed 343 * before any prompt. 344 */ 345static int write_string(UI *ui, UI_STRING *uis) 346{ 347 switch (UI_get_string_type(uis)) { 348 case UIT_ERROR: 349 case UIT_INFO: 350 fputs(UI_get0_output_string(uis), tty_out); 351 fflush(tty_out); 352 break; 353 default: 354 break; 355 } 356 return 1; 357} 358 359static int read_string(UI *ui, UI_STRING *uis) 360{ 361 int ok = 0; 362 363 switch (UI_get_string_type(uis)) { 364 case UIT_BOOLEAN: 365 fputs(UI_get0_output_string(uis), tty_out); 366 fputs(UI_get0_action_string(uis), tty_out); 367 fflush(tty_out); 368 return read_string_inner(ui, uis, 369 UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 370 0); 371 case UIT_PROMPT: 372 fputs(UI_get0_output_string(uis), tty_out); 373 fflush(tty_out); 374 return read_string_inner(ui, uis, 375 UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 376 1); 377 case UIT_VERIFY: 378 fprintf(tty_out, "Verifying - %s", UI_get0_output_string(uis)); 379 fflush(tty_out); 380 if ((ok = read_string_inner(ui, uis, 381 UI_get_input_flags(uis) & 382 UI_INPUT_FLAG_ECHO, 1)) <= 0) 383 return ok; 384 if (strcmp(UI_get0_result_string(uis), UI_get0_test_string(uis)) != 0) { 385 fprintf(tty_out, "Verify failure\n"); 386 fflush(tty_out); 387 return 0; 388 } 389 break; 390 default: 391 break; 392 } 393 return 1; 394} 395 396#if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 397/* Internal functions to read a string without echoing */ 398static int read_till_nl(FILE *in) 399{ 400# define SIZE 4 401 char buf[SIZE + 1]; 402 403 do { 404 if (!fgets(buf, SIZE, in)) 405 return 0; 406 } while (strchr(buf, '\n') == NULL); 407 return 1; 408} 409 410static volatile sig_atomic_t intr_signal; 411#endif 412 413static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl) 414{ 415 static int ps; 416 int ok; 417 char result[BUFSIZ]; 418 int maxsize = BUFSIZ - 1; 419#if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 420 char *p; 421 422 intr_signal = 0; 423 ok = 0; 424 ps = 0; 425 426 pushsig(); 427 ps = 1; 428 429 if (!echo && !noecho_console(ui)) 430 goto error; 431 ps = 2; 432 433 result[0] = '\0'; 434# ifdef OPENSSL_SYS_MSDOS 435 if (!echo) { 436 noecho_fgets(result, maxsize, tty_in); 437 p = result; /* FIXME: noecho_fgets doesn't return errors */ 438 } else 439 p = fgets(result, maxsize, tty_in); 440# else 441 p = fgets(result, maxsize, tty_in); 442# endif 443 if (p == NULL) 444 goto error; 445 if (feof(tty_in)) 446 goto error; 447 if (ferror(tty_in)) 448 goto error; 449 if ((p = (char *)strchr(result, '\n')) != NULL) { 450 if (strip_nl) 451 *p = '\0'; 452 } else if (!read_till_nl(tty_in)) 453 goto error; 454 if (UI_set_result(ui, uis, result) >= 0) 455 ok = 1; 456 457 error: 458 if (intr_signal == SIGINT) 459 ok = -1; 460 if (!echo) 461 fprintf(tty_out, "\n"); 462 if (ps >= 2 && !echo && !echo_console(ui)) 463 ok = 0; 464 465 if (ps >= 1) 466 popsig(); 467#else 468 ok = 1; 469#endif 470 471 OPENSSL_cleanse(result, BUFSIZ); 472 return ok; 473} 474 475/* Internal functions to open, handle and close a channel to the console. */ 476static int open_console(UI *ui) 477{ 478 CRYPTO_w_lock(CRYPTO_LOCK_UI); 479 is_a_tty = 1; 480 481#if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS) 482 tty_in = stdin; 483 tty_out = stderr; 484#else 485# ifdef OPENSSL_SYS_MSDOS 486# define DEV_TTY "con" 487# else 488# define DEV_TTY "/dev/tty" 489# endif 490 if ((tty_in = fopen(DEV_TTY, "r")) == NULL) 491 tty_in = stdin; 492 if ((tty_out = fopen(DEV_TTY, "w")) == NULL) 493 tty_out = stderr; 494#endif 495 496#if defined(TTY_get) && !defined(OPENSSL_SYS_VMS) 497 if (TTY_get(fileno(tty_in), &tty_orig) == -1) { 498# ifdef ENOTTY 499 if (errno == ENOTTY) 500 is_a_tty = 0; 501 else 502# endif 503# ifdef EINVAL 504 /* 505 * Ariel Glenn ariel@columbia.edu reports that solaris can return 506 * EINVAL instead. This should be ok 507 */ 508 if (errno == EINVAL) 509 is_a_tty = 0; 510 else 511# endif 512# ifdef ENXIO 513 /* 514 * Solaris can return ENXIO. 515 * This should be ok 516 */ 517 if (errno == ENXIO) 518 is_a_tty = 0; 519 else 520# endif 521# ifdef EIO 522 /* 523 * Linux can return EIO. 524 * This should be ok 525 */ 526 if (errno == EIO) 527 is_a_tty = 0; 528 else 529# endif 530# ifdef ENODEV 531 /* 532 * MacOS X returns ENODEV (Operation not supported by device), 533 * which seems appropriate. 534 */ 535 if (errno == ENODEV) 536 is_a_tty = 0; 537 else 538# endif 539 return 0; 540 } 541#endif 542#ifdef OPENSSL_SYS_VMS 543 status = sys$assign(&terminal, &channel, 0, 0); 544 545 /* if there isn't a TT device, something is very wrong */ 546 if (status != SS$_NORMAL) 547 return 0; 548 549 status = sys$qiow(0, channel, IO$_SENSEMODE, &iosb, 0, 0, tty_orig, 12, 550 0, 0, 0, 0); 551 552 /* If IO$_SENSEMODE doesn't work, this is not a terminal device */ 553 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) 554 is_a_tty = 0; 555#endif 556 return 1; 557} 558 559static int noecho_console(UI *ui) 560{ 561#ifdef TTY_FLAGS 562 memcpy(&(tty_new), &(tty_orig), sizeof(tty_orig)); 563 tty_new.TTY_FLAGS &= ~ECHO; 564#endif 565 566#if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) 567 if (is_a_tty && (TTY_set(fileno(tty_in), &tty_new) == -1)) 568 return 0; 569#endif 570#ifdef OPENSSL_SYS_VMS 571 if (is_a_tty) { 572 tty_new[0] = tty_orig[0]; 573 tty_new[1] = tty_orig[1] | TT$M_NOECHO; 574 tty_new[2] = tty_orig[2]; 575 status = sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12, 576 0, 0, 0, 0); 577 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) 578 return 0; 579 } 580#endif 581 return 1; 582} 583 584static int echo_console(UI *ui) 585{ 586#if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) 587 memcpy(&(tty_new), &(tty_orig), sizeof(tty_orig)); 588 if (is_a_tty && (TTY_set(fileno(tty_in), &tty_new) == -1)) 589 return 0; 590#endif 591#ifdef OPENSSL_SYS_VMS 592 if (is_a_tty) { 593 tty_new[0] = tty_orig[0]; 594 tty_new[1] = tty_orig[1]; 595 tty_new[2] = tty_orig[2]; 596 status = sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12, 597 0, 0, 0, 0); 598 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) 599 return 0; 600 } 601#endif 602 return 1; 603} 604 605static int close_console(UI *ui) 606{ 607 if (tty_in != stdin) 608 fclose(tty_in); 609 if (tty_out != stderr) 610 fclose(tty_out); 611#ifdef OPENSSL_SYS_VMS 612 status = sys$dassgn(channel); 613 if (status != SS$_NORMAL) 614 return 0; 615#endif 616 CRYPTO_w_unlock(CRYPTO_LOCK_UI); 617 618 return 1; 619} 620 621#if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 622/* Internal functions to handle signals and act on them */ 623static void pushsig(void) 624{ 625# ifndef OPENSSL_SYS_WIN32 626 int i; 627# endif 628# ifdef SIGACTION 629 struct sigaction sa; 630 631 memset(&sa, 0, sizeof(sa)); 632 sa.sa_handler = recsig; 633# endif 634 635# ifdef OPENSSL_SYS_WIN32 636 savsig[SIGABRT] = signal(SIGABRT, recsig); 637 savsig[SIGFPE] = signal(SIGFPE, recsig); 638 savsig[SIGILL] = signal(SIGILL, recsig); 639 savsig[SIGINT] = signal(SIGINT, recsig); 640 savsig[SIGSEGV] = signal(SIGSEGV, recsig); 641 savsig[SIGTERM] = signal(SIGTERM, recsig); 642# else 643 for (i = 1; i < NX509_SIG; i++) { 644# ifdef SIGUSR1 645 if (i == SIGUSR1) 646 continue; 647# endif 648# ifdef SIGUSR2 649 if (i == SIGUSR2) 650 continue; 651# endif 652# ifdef SIGKILL 653 if (i == SIGKILL) /* We can't make any action on that. */ 654 continue; 655# endif 656# ifdef SIGACTION 657 sigaction(i, &sa, &savsig[i]); 658# else 659 savsig[i] = signal(i, recsig); 660# endif 661 } 662# endif 663 664# ifdef SIGWINCH 665 signal(SIGWINCH, SIG_DFL); 666# endif 667} 668 669static void popsig(void) 670{ 671# ifdef OPENSSL_SYS_WIN32 672 signal(SIGABRT, savsig[SIGABRT]); 673 signal(SIGFPE, savsig[SIGFPE]); 674 signal(SIGILL, savsig[SIGILL]); 675 signal(SIGINT, savsig[SIGINT]); 676 signal(SIGSEGV, savsig[SIGSEGV]); 677 signal(SIGTERM, savsig[SIGTERM]); 678# else 679 int i; 680 for (i = 1; i < NX509_SIG; i++) { 681# ifdef SIGUSR1 682 if (i == SIGUSR1) 683 continue; 684# endif 685# ifdef SIGUSR2 686 if (i == SIGUSR2) 687 continue; 688# endif 689# ifdef SIGACTION 690 sigaction(i, &savsig[i], NULL); 691# else 692 signal(i, savsig[i]); 693# endif 694 } 695# endif 696} 697 698static void recsig(int i) 699{ 700 intr_signal = i; 701} 702#endif 703 704/* Internal functions specific for Windows */ 705#if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 706static int noecho_fgets(char *buf, int size, FILE *tty) 707{ 708 int i; 709 char *p; 710 711 p = buf; 712 for (;;) { 713 if (size == 0) { 714 *p = '\0'; 715 break; 716 } 717 size--; 718# ifdef WIN16TTY 719 i = _inchar(); 720# elif defined(_WIN32) 721 i = _getch(); 722# else 723 i = getch(); 724# endif 725 if (i == '\r') 726 i = '\n'; 727 *(p++) = i; 728 if (i == '\n') { 729 *p = '\0'; 730 break; 731 } 732 } 733# ifdef WIN_CONSOLE_BUG 734 /* 735 * Win95 has several evil console bugs: one of these is that the last 736 * character read using getch() is passed to the next read: this is 737 * usually a CR so this can be trouble. No STDIO fix seems to work but 738 * flushing the console appears to do the trick. 739 */ 740 { 741 HANDLE inh; 742 inh = GetStdHandle(STD_INPUT_HANDLE); 743 FlushConsoleInputBuffer(inh); 744 } 745# endif 746 return (strlen(buf)); 747} 748#endif 749