release/src/router/openssl/crypto/ui/ui_openssl.c

   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 #if defined(OPENSSL_SYSNAME_VXWORKS)
 126 #include <sys/types.h>
 127 #endif
 128
 129 #if !defined(_POSIX_C_SOURCE) && defined(OPENSSL_SYS_VMS)
 130 #ifndef _POSIX_C_SOURCE
 131 #define _POSIX_C_SOURCE 2
 132 #endif
 133 #endif
 134 #include <signal.h>
 135 #include <stdio.h>
 136 #include <string.h>
 137 #include <errno.h>
 138
 139 #if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS)
 140 # ifdef OPENSSL_UNISTD
 141 #  include OPENSSL_UNISTD
 142 # else
 143 #  include <unistd.h>
 144 # endif
 145 /* If unistd.h defines _POSIX_VERSION, we conclude that we
 146  * are on a POSIX system and have sigaction and termios. */
 147 # if defined(_POSIX_VERSION)
 148
 149 #  define SIGACTION
 150 #  if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY)
 151 #   define TERMIOS
 152 #  endif
 153
 154 # endif
 155 #endif
 156
 157 #ifdef WIN16TTY
 158 # undef OPENSSL_SYS_WIN16
 159 # undef WIN16
 160 # undef _WINDOWS
 161 # include <graph.h>
 162 #endif
 163
 164 /* 06-Apr-92 Luke Brennan    Support for VMS */
 165 #include "ui_locl.h"
 166 #include "cryptlib.h"
 167
 168 #ifdef OPENSSL_SYS_VMS          /* prototypes for sys$whatever */
 169 # include <starlet.h>
 170 # ifdef __DECC
 171 #  pragma message disable DOLLARID
 172 # endif
 173 #endif
 174
 175 #ifdef WIN_CONSOLE_BUG
 176 # include <windows.h>
 177 #ifndef OPENSSL_SYS_WINCE
 178 # include <wincon.h>
 179 #endif
 180 #endif
 181
 182
 183 /* There are 5 types of terminal interface supported,
 184  * TERMIO, TERMIOS, VMS, MSDOS and SGTTY
 185  */
 186
 187 #if defined(__sgi) && !defined(TERMIOS)
 188 # define TERMIOS
 189 # undef  TERMIO
 190 # undef  SGTTY
 191 #endif
 192
 193 #if defined(linux) && !defined(TERMIO)
 194 # undef  TERMIOS
 195 # define TERMIO
 196 # undef  SGTTY
 197 #endif
 198
 199 #ifdef _LIBC
 200 # undef  TERMIOS
 201 # define TERMIO
 202 # undef  SGTTY
 203 #endif
 204
 205 #if !defined(TERMIO) && !defined(TERMIOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_MACINTOSH_CLASSIC) && !defined(MAC_OS_GUSI_SOURCE)
 206 # undef  TERMIOS
 207 # undef  TERMIO
 208 # define SGTTY
 209 #endif
 210
 211 #if defined(OPENSSL_SYS_VXWORKS)
 212 #undef TERMIOS
 213 #undef TERMIO
 214 #undef SGTTY
 215 #endif
 216
 217 #if defined(OPENSSL_SYS_NETWARE)
 218 #undef TERMIOS
 219 #undef TERMIO
 220 #undef SGTTY
 221 #endif
 222
 223 #ifdef TERMIOS
 224 # include <termios.h>
 225 # define TTY_STRUCT             struct termios
 226 # define TTY_FLAGS              c_lflag
 227 # define TTY_get(tty,data)      tcgetattr(tty,data)
 228 # define TTY_set(tty,data)      tcsetattr(tty,TCSANOW,data)
 229 #endif
 230
 231 #ifdef TERMIO
 232 # include <termio.h>
 233 # define TTY_STRUCT             struct termio
 234 # define TTY_FLAGS              c_lflag
 235 # define TTY_get(tty,data)      ioctl(tty,TCGETA,data)
 236 # define TTY_set(tty,data)      ioctl(tty,TCSETA,data)
 237 #endif
 238
 239 #ifdef SGTTY
 240 # include <sgtty.h>
 241 # define TTY_STRUCT             struct sgttyb
 242 # define TTY_FLAGS              sg_flags
 243 # define TTY_get(tty,data)      ioctl(tty,TIOCGETP,data)
 244 # define TTY_set(tty,data)      ioctl(tty,TIOCSETP,data)
 245 #endif
 246
 247 #if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MACINTOSH_CLASSIC) && !defined(OPENSSL_SYS_SUNOS)
 248 # include <sys/ioctl.h>
 249 #endif
 250
 251 #ifdef OPENSSL_SYS_MSDOS
 252 # include <conio.h>
 253 #endif
 254
 255 #ifdef OPENSSL_SYS_VMS
 256 # include <ssdef.h>
 257 # include <iodef.h>
 258 # include <ttdef.h>
 259 # include <descrip.h>
 260 struct IOSB {
 261         short iosb$w_value;
 262         short iosb$w_count;
 263         long  iosb$l_info;
 264         };
 265 #endif
 266
 267 #ifdef OPENSSL_SYS_SUNOS
 268         typedef int sig_atomic_t;
 269 #endif
 270
 271 #if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(MAC_OS_GUSI_SOURCE) || defined(OPENSSL_SYS_NETWARE)
 272 /*
 273  * This one needs work. As a matter of fact the code is unoperational
 274  * and this is only a trick to get it compiled.
 275  *                                      <appro@fy.chalmers.se>
 276  */
 277 # define TTY_STRUCT int
 278 #endif
 279
 280 #ifndef NX509_SIG
 281 # define NX509_SIG 32
 282 #endif
 283
 284
 285 /* Define globals.  They are protected by a lock */
 286 #ifdef SIGACTION
 287 static struct sigaction savsig[NX509_SIG];
 288 #else
 289 static void (*savsig[NX509_SIG])(int );
 290 #endif
 291
 292 #ifdef OPENSSL_SYS_VMS
 293 static struct IOSB iosb;
 294 static $DESCRIPTOR(terminal,"TT");
 295 static long tty_orig[3], tty_new[3]; /* XXX   Is there any guarantee that this will always suffice for the actual structures? */
 296 static long status;
 297 static unsigned short channel = 0;
 298 #else
 299 #if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__)
 300 static TTY_STRUCT tty_orig,tty_new;
 301 #endif
 302 #endif
 303 static FILE *tty_in, *tty_out;
 304 static int is_a_tty;
 305
 306 /* Declare static functions */
 307 #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
 308 static int read_till_nl(FILE *);
 309 static void recsig(int);
 310 static void pushsig(void);
 311 static void popsig(void);
 312 #endif
 313 #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16)
 314 static int noecho_fgets(char *buf, int size, FILE *tty);
 315 #endif
 316 static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl);
 317
 318 static int read_string(UI *ui, UI_STRING *uis);
 319 static int write_string(UI *ui, UI_STRING *uis);
 320
 321 static int open_console(UI *ui);
 322 static int echo_console(UI *ui);
 323 static int noecho_console(UI *ui);
 324 static int close_console(UI *ui);
 325
 326 static UI_METHOD ui_openssl =
 327         {
 328         "OpenSSL default user interface",
 329         open_console,
 330         write_string,
 331         NULL,                   /* No flusher is needed for command lines */
 332         read_string,
 333         close_console,
 334         NULL
 335         };
 336
 337 /* The method with all the built-in thingies */
 338 UI_METHOD *UI_OpenSSL(void)
 339         {
 340         return &ui_openssl;
 341         }
 342
 343 /* The following function makes sure that info and error strings are printed
 344    before any prompt. */
 345 static int write_string(UI *ui, UI_STRING *uis)
 346         {
 347         switch (UI_get_string_type(uis))
 348                 {
 349         case UIT_ERROR:
 350         case UIT_INFO:
 351                 fputs(UI_get0_output_string(uis), tty_out);
 352                 fflush(tty_out);
 353                 break;
 354         default:
 355                 break;
 356                 }
 357         return 1;
 358         }
 359
 360 static int read_string(UI *ui, UI_STRING *uis)
 361         {
 362         int ok = 0;
 363
 364         switch (UI_get_string_type(uis))
 365                 {
 366         case UIT_BOOLEAN:
 367                 fputs(UI_get0_output_string(uis), tty_out);
 368                 fputs(UI_get0_action_string(uis), tty_out);
 369                 fflush(tty_out);
 370                 return read_string_inner(ui, uis,
 371                         UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 0);
 372         case UIT_PROMPT:
 373                 fputs(UI_get0_output_string(uis), tty_out);
 374                 fflush(tty_out);
 375                 return read_string_inner(ui, uis,
 376                         UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 1);
 377         case UIT_VERIFY:
 378                 fprintf(tty_out,"Verifying - %s",
 379                         UI_get0_output_string(uis));
 380                 fflush(tty_out);
 381                 if ((ok = read_string_inner(ui, uis,
 382                         UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 1)) <= 0)
 383                         return ok;
 384                 if (strcmp(UI_get0_result_string(uis),
 385                         UI_get0_test_string(uis)) != 0)
 386                         {
 387                         fprintf(tty_out,"Verify failure\n");
 388                         fflush(tty_out);
 389                         return 0;
 390                         }
 391                 break;
 392         default:
 393                 break;
 394                 }
 395         return 1;
 396         }
 397
 398
 399 #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
 400 /* Internal functions to read a string without echoing */
 401 static int read_till_nl(FILE *in)
 402         {
 403 #define SIZE 4
 404         char buf[SIZE+1];
 405
 406         do      {
 407                 if (!fgets(buf,SIZE,in))
 408                         return 0;
 409                 } while (strchr(buf,'\n') == NULL);
 410         return 1;
 411         }
 412
 413 static volatile sig_atomic_t intr_signal;
 414 #endif
 415
 416 static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl)
 417         {
 418         static int ps;
 419         int ok;
 420         char result[BUFSIZ];
 421         int maxsize = BUFSIZ-1;
 422 #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
 423         char *p;
 424
 425         intr_signal=0;
 426         ok=0;
 427         ps=0;
 428
 429         pushsig();
 430         ps=1;
 431
 432         if (!echo && !noecho_console(ui))
 433                 goto error;
 434         ps=2;
 435
 436         result[0]='\0';
 437 #ifdef OPENSSL_SYS_MSDOS
 438         if (!echo)
 439                 {
 440                 noecho_fgets(result,maxsize,tty_in);
 441                 p=result; /* FIXME: noecho_fgets doesn't return errors */
 442                 }
 443         else
 444                 p=fgets(result,maxsize,tty_in);
 445 #else
 446         p=fgets(result,maxsize,tty_in);
 447 #endif
 448         if(!p)
 449                 goto error;
 450         if (feof(tty_in)) goto error;
 451         if (ferror(tty_in)) goto error;
 452         if ((p=(char *)strchr(result,'\n')) != NULL)
 453                 {
 454                 if (strip_nl)
 455                         *p='\0';
 456                 }
 457         else
 458                 if (!read_till_nl(tty_in))
 459                         goto error;
 460         if (UI_set_result(ui, uis, result) >= 0)
 461                 ok=1;
 462
 463 error:
 464         if (intr_signal == SIGINT)
 465                 ok=-1;
 466         if (!echo) fprintf(tty_out,"\n");
 467         if (ps >= 2 && !echo && !echo_console(ui))
 468                 ok=0;
 469
 470         if (ps >= 1)
 471                 popsig();
 472 #else
 473         ok=1;
 474 #endif
 475
 476         OPENSSL_cleanse(result,BUFSIZ);
 477         return ok;
 478         }
 479
 480
 481 /* Internal functions to open, handle and close a channel to the console.  */
 482 static int open_console(UI *ui)
 483         {
 484         CRYPTO_w_lock(CRYPTO_LOCK_UI);
 485         is_a_tty = 1;
 486
 487 #if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS)
 488         tty_in=stdin;
 489         tty_out=stderr;
 490 #else
 491 #  ifdef OPENSSL_SYS_MSDOS
 492 #    define DEV_TTY "con"
 493 #  else
 494 #    define DEV_TTY "/dev/tty"
 495 #  endif
 496         if ((tty_in=fopen(DEV_TTY,"r")) == NULL)
 497                 tty_in=stdin;
 498         if ((tty_out=fopen(DEV_TTY,"w")) == NULL)
 499                 tty_out=stderr;
 500 #endif
 501
 502 #if defined(TTY_get) && !defined(OPENSSL_SYS_VMS)
 503         if (TTY_get(fileno(tty_in),&tty_orig) == -1)
 504                 {
 505 #ifdef ENOTTY
 506                 if (errno == ENOTTY)
 507                         is_a_tty=0;
 508                 else
 509 #endif
 510 #ifdef EINVAL
 511                 /* Ariel Glenn ariel@columbia.edu reports that solaris
 512                  * can return EINVAL instead.  This should be ok */
 513                 if (errno == EINVAL)
 514                         is_a_tty=0;
 515                 else
 516 #endif
 517                         return 0;
 518                 }
 519 #endif
 520 #ifdef OPENSSL_SYS_VMS
 521         status = sys$assign(&terminal,&channel,0,0);
 522         if (status != SS$_NORMAL)
 523                 return 0;
 524         status=sys$qiow(0,channel,IO$_SENSEMODE,&iosb,0,0,tty_orig,12,0,0,0,0);
 525         if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
 526                 return 0;
 527 #endif
 528         return 1;
 529         }
 530
 531 static int noecho_console(UI *ui)
 532         {
 533 #ifdef TTY_FLAGS
 534         memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig));
 535         tty_new.TTY_FLAGS &= ~ECHO;
 536 #endif
 537
 538 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
 539         if (is_a_tty && (TTY_set(fileno(tty_in),&tty_new) == -1))
 540                 return 0;
 541 #endif
 542 #ifdef OPENSSL_SYS_VMS
 543         tty_new[0] = tty_orig[0];
 544         tty_new[1] = tty_orig[1] | TT$M_NOECHO;
 545         tty_new[2] = tty_orig[2];
 546         status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0,tty_new,12,0,0,0,0);
 547         if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
 548                 return 0;
 549 #endif
 550         return 1;
 551         }
 552
 553 static int echo_console(UI *ui)
 554         {
 555 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
 556         memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig));
 557         tty_new.TTY_FLAGS |= ECHO;
 558 #endif
 559
 560 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
 561         if (is_a_tty && (TTY_set(fileno(tty_in),&tty_new) == -1))
 562                 return 0;
 563 #endif
 564 #ifdef OPENSSL_SYS_VMS
 565         tty_new[0] = tty_orig[0];
 566         tty_new[1] = tty_orig[1] & ~TT$M_NOECHO;
 567         tty_new[2] = tty_orig[2];
 568         status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0,tty_new,12,0,0,0,0);
 569         if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
 570                 return 0;
 571 #endif
 572         return 1;
 573         }
 574
 575 static int close_console(UI *ui)
 576         {
 577         if (tty_in != stdin) fclose(tty_in);
 578         if (tty_out != stderr) fclose(tty_out);
 579 #ifdef OPENSSL_SYS_VMS
 580         status = sys$dassgn(channel);
 581 #endif
 582         CRYPTO_w_unlock(CRYPTO_LOCK_UI);
 583
 584         return 1;
 585         }
 586
 587
 588 #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
 589 /* Internal functions to handle signals and act on them */
 590 static 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                 {
 612 #ifdef SIGUSR1
 613                 if (i == SIGUSR1)
 614                         continue;
 615 #endif
 616 #ifdef SIGUSR2
 617                 if (i == SIGUSR2)
 618                         continue;
 619 #endif
 620 #ifdef SIGKILL
 621                 if (i == SIGKILL) /* We can't make any action on that. */
 622                         continue;
 623 #endif
 624 #ifdef SIGACTION
 625                 sigaction(i,&sa,&savsig[i]);
 626 #else
 627                 savsig[i]=signal(i,recsig);
 628 #endif
 629                 }
 630 #endif
 631
 632 #ifdef SIGWINCH
 633         signal(SIGWINCH,SIG_DFL);
 634 #endif
 635         }
 636
 637 static void popsig(void)
 638         {
 639 #ifdef OPENSSL_SYS_WIN32
 640         signal(SIGABRT,savsig[SIGABRT]);
 641         signal(SIGFPE,savsig[SIGFPE]);
 642         signal(SIGILL,savsig[SIGILL]);
 643         signal(SIGINT,savsig[SIGINT]);
 644         signal(SIGSEGV,savsig[SIGSEGV]);
 645         signal(SIGTERM,savsig[SIGTERM]);
 646 #else
 647         int i;
 648         for (i=1; i<NX509_SIG; i++)
 649                 {
 650 #ifdef SIGUSR1
 651                 if (i == SIGUSR1)
 652                         continue;
 653 #endif
 654 #ifdef SIGUSR2
 655                 if (i == SIGUSR2)
 656                         continue;
 657 #endif
 658 #ifdef SIGACTION
 659                 sigaction(i,&savsig[i],NULL);
 660 #else
 661                 signal(i,savsig[i]);
 662 #endif
 663                 }
 664 #endif
 665         }
 666
 667 static void recsig(int i)
 668         {
 669         intr_signal=i;
 670         }
 671 #endif
 672
 673 /* Internal functions specific for Windows */
 674 #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
 675 static int noecho_fgets(char *buf, int size, FILE *tty)
 676         {
 677         int i;
 678         char *p;
 679
 680         p=buf;
 681         for (;;)
 682                 {
 683                 if (size == 0)
 684                         {
 685                         *p='\0';
 686                         break;
 687                         }
 688                 size--;
 689 #ifdef WIN16TTY
 690                 i=_inchar();
 691 #elif defined(_WIN32)
 692                 i=_getch();
 693 #else
 694                 i=getch();
 695 #endif
 696                 if (i == '\r') i='\n';
 697                 *(p++)=i;
 698                 if (i == '\n')
 699                         {
 700                         *p='\0';
 701                         break;
 702                         }
 703                 }
 704 #ifdef WIN_CONSOLE_BUG
 705 /* Win95 has several evil console bugs: one of these is that the
 706  * last character read using getch() is passed to the next read: this is
 707  * usually a CR so this can be trouble. No STDIO fix seems to work but
 708  * flushing the console appears to do the trick.
 709  */
 710                 {
 711                         HANDLE inh;
 712                         inh = GetStdHandle(STD_INPUT_HANDLE);
 713                         FlushConsoleInputBuffer(inh);
 714                 }
 715 #endif
 716         return(strlen(buf));
 717         }
 718 #endif