crypto/openssl-0.9.7e/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 #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>
 239 struct 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
 266 static struct sigaction savsig[NX509_SIG];
 267 #else
 268 static void (*savsig[NX509_SIG])(int );
 269 #endif
 270
 271 #ifdef OPENSSL_SYS_VMS
 272 static struct IOSB iosb;
 273 static $DESCRIPTOR(terminal,"TT");
 274 static long tty_orig[3], tty_new[3]; /* XXX   Is there any guarantee that this will always suffice for the actual structures? */
 275 static long status;
 276 static unsigned short channel = 0;
 277 #else
 278 #if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__)
 279 static TTY_STRUCT tty_orig,tty_new;
 280 #endif
 281 #endif
 282 static FILE *tty_in, *tty_out;
 283 static int is_a_tty;
 284
 285 /* Declare static functions */
 286 #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
 287 static void read_till_nl(FILE *);
 288 static void recsig(int);
 289 static void pushsig(void);
 290 static void popsig(void);
 291 #endif
 292 #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16)
 293 static int noecho_fgets(char *buf, int size, FILE *tty);
 294 #endif
 295 static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl);
 296
 297 static int read_string(UI *ui, UI_STRING *uis);
 298 static int write_string(UI *ui, UI_STRING *uis);
 299
 300 static int open_console(UI *ui);
 301 static int echo_console(UI *ui);
 302 static int noecho_console(UI *ui);
 303 static int close_console(UI *ui);
 304
 305 static 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 */
 317 UI_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. */
 324 static 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
 339 static 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 */
 380 static void read_till_nl(FILE *in)
 381         {
 382 #define SIZE 4
 383         char buf[SIZE+1];
 384
 385         do      {
 386                 fgets(buf,SIZE,in);
 387                 } while (strchr(buf,'\n') == NULL);
 388         }
 389
 390 static volatile sig_atomic_t intr_signal;
 391 #endif
 392
 393 static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl)
 394         {
 395         static int ps;
 396         int ok;
 397         char result[BUFSIZ];
 398         int maxsize = BUFSIZ-1;
 399 #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
 400         char *p;
 401
 402         intr_signal=0;
 403         ok=0;
 404         ps=0;
 405
 406         pushsig();
 407         ps=1;
 408
 409         if (!echo && !noecho_console(ui))
 410                 goto error;
 411         ps=2;
 412
 413         result[0]='\0';
 414 #ifdef OPENSSL_SYS_MSDOS
 415         if (!echo)
 416                 {
 417                 noecho_fgets(result,maxsize,tty_in);
 418                 p=result; /* FIXME: noecho_fgets doesn't return errors */
 419                 }
 420         else
 421                 p=fgets(result,maxsize,tty_in);
 422 #else
 423         p=fgets(result,maxsize,tty_in);
 424 #endif
 425         if(!p)
 426                 goto error;
 427         if (feof(tty_in)) goto error;
 428         if (ferror(tty_in)) goto error;
 429         if ((p=(char *)strchr(result,'\n')) != NULL)
 430                 {
 431                 if (strip_nl)
 432                         *p='\0';
 433                 }
 434         else
 435                 read_till_nl(tty_in);
 436         if (UI_set_result(ui, uis, result) >= 0)
 437                 ok=1;
 438
 439 error:
 440         if (intr_signal == SIGINT)
 441                 ok=-1;
 442         if (!echo) fprintf(tty_out,"\n");
 443         if (ps >= 2 && !echo && !echo_console(ui))
 444                 ok=0;
 445
 446         if (ps >= 1)
 447                 popsig();
 448 #else
 449         ok=1;
 450 #endif
 451
 452         OPENSSL_cleanse(result,BUFSIZ);
 453         return ok;
 454         }
 455
 456
 457 /* Internal functions to open, handle and close a channel to the console.  */
 458 static int open_console(UI *ui)
 459         {
 460         CRYPTO_w_lock(CRYPTO_LOCK_UI);
 461         is_a_tty = 1;
 462
 463 #if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(OPENSSL_SYS_VXWORKS)
 464         tty_in=stdin;
 465         tty_out=stderr;
 466 #else
 467 #  ifdef OPENSSL_SYS_MSDOS
 468 #    define DEV_TTY "con"
 469 #  else
 470 #    define DEV_TTY "/dev/tty"
 471 #  endif
 472         if ((tty_in=fopen(DEV_TTY,"r")) == NULL)
 473                 tty_in=stdin;
 474         if ((tty_out=fopen(DEV_TTY,"w")) == NULL)
 475                 tty_out=stderr;
 476 #endif
 477
 478 #if defined(TTY_get) && !defined(OPENSSL_SYS_VMS)
 479         if (TTY_get(fileno(tty_in),&tty_orig) == -1)
 480                 {
 481 #ifdef ENOTTY
 482                 if (errno == ENOTTY)
 483                         is_a_tty=0;
 484                 else
 485 #endif
 486 #ifdef EINVAL
 487                 /* Ariel Glenn ariel@columbia.edu reports that solaris
 488                  * can return EINVAL instead.  This should be ok */
 489                 if (errno == EINVAL)
 490                         is_a_tty=0;
 491                 else
 492 #endif
 493                         return 0;
 494                 }
 495 #endif
 496 #ifdef OPENSSL_SYS_VMS
 497         status = sys$assign(&terminal,&channel,0,0);
 498         if (status != SS$_NORMAL)
 499                 return 0;
 500         status=sys$qiow(0,channel,IO$_SENSEMODE,&iosb,0,0,tty_orig,12,0,0,0,0);
 501         if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
 502                 return 0;
 503 #endif
 504         return 1;
 505         }
 506
 507 static int noecho_console(UI *ui)
 508         {
 509 #ifdef TTY_FLAGS
 510         memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig));
 511         tty_new.TTY_FLAGS &= ~ECHO;
 512 #endif
 513
 514 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
 515         if (is_a_tty && (TTY_set(fileno(tty_in),&tty_new) == -1))
 516                 return 0;
 517 #endif
 518 #ifdef OPENSSL_SYS_VMS
 519         tty_new[0] = tty_orig[0];
 520         tty_new[1] = tty_orig[1] | TT$M_NOECHO;
 521         tty_new[2] = tty_orig[2];
 522         status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0,tty_new,12,0,0,0,0);
 523         if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
 524                 return 0;
 525 #endif
 526         return 1;
 527         }
 528
 529 static int echo_console(UI *ui)
 530         {
 531 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
 532         memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig));
 533         tty_new.TTY_FLAGS |= ECHO;
 534 #endif
 535
 536 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
 537         if (is_a_tty && (TTY_set(fileno(tty_in),&tty_new) == -1))
 538                 return 0;
 539 #endif
 540 #ifdef OPENSSL_SYS_VMS
 541         tty_new[0] = tty_orig[0];
 542         tty_new[1] = tty_orig[1] & ~TT$M_NOECHO;
 543         tty_new[2] = tty_orig[2];
 544         status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0,tty_new,12,0,0,0,0);
 545         if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
 546                 return 0;
 547 #endif
 548         return 1;
 549         }
 550
 551 static int close_console(UI *ui)
 552         {
 553         if (tty_in != stdin) fclose(tty_in);
 554         if (tty_out != stderr) fclose(tty_out);
 555 #ifdef OPENSSL_SYS_VMS
 556         status = sys$dassgn(channel);
 557 #endif
 558         CRYPTO_w_unlock(CRYPTO_LOCK_UI);
 559
 560         return 1;
 561         }
 562
 563
 564 #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
 565 /* Internal functions to handle signals and act on them */
 566 static void pushsig(void)
 567         {
 568         int i;
 569 #ifdef SIGACTION
 570         struct sigaction sa;
 571
 572         memset(&sa,0,sizeof sa);
 573         sa.sa_handler=recsig;
 574 #endif
 575
 576         for (i=1; i<NX509_SIG; i++)
 577                 {
 578 #ifdef SIGUSR1
 579                 if (i == SIGUSR1)
 580                         continue;
 581 #endif
 582 #ifdef SIGUSR2
 583                 if (i == SIGUSR2)
 584                         continue;
 585 #endif
 586 #ifdef SIGKILL
 587                 if (i == SIGKILL) /* We can't make any action on that. */
 588                         continue;
 589 #endif
 590 #ifdef SIGACTION
 591                 sigaction(i,&sa,&savsig[i]);
 592 #else
 593                 savsig[i]=signal(i,recsig);
 594 #endif
 595                 }
 596
 597 #ifdef SIGWINCH
 598         signal(SIGWINCH,SIG_DFL);
 599 #endif
 600         }
 601
 602 static void popsig(void)
 603         {
 604         int i;
 605
 606         for (i=1; i<NX509_SIG; i++)
 607                 {
 608 #ifdef SIGUSR1
 609                 if (i == SIGUSR1)
 610                         continue;
 611 #endif
 612 #ifdef SIGUSR2
 613                 if (i == SIGUSR2)
 614                         continue;
 615 #endif
 616 #ifdef SIGACTION
 617                 sigaction(i,&savsig[i],NULL);
 618 #else
 619                 signal(i,savsig[i]);
 620 #endif
 621                 }
 622         }
 623
 624 static void recsig(int i)
 625         {
 626         intr_signal=i;
 627         }
 628 #endif
 629
 630 /* Internal functions specific for Windows */
 631 #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
 632 static int noecho_fgets(char *buf, int size, FILE *tty)
 633         {
 634         int i;
 635         char *p;
 636
 637         p=buf;
 638         for (;;)
 639                 {
 640                 if (size == 0)
 641                         {
 642                         *p='\0';
 643                         break;
 644                         }
 645                 size--;
 646 #ifdef WIN16TTY
 647                 i=_inchar();
 648 #else
 649                 i=getch();
 650 #endif
 651                 if (i == '\r') i='\n';
 652                 *(p++)=i;
 653                 if (i == '\n')
 654                         {
 655                         *p='\0';
 656                         break;
 657                         }
 658                 }
 659 #ifdef WIN_CONSOLE_BUG
 660 /* Win95 has several evil console bugs: one of these is that the
 661  * last character read using getch() is passed to the next read: this is
 662  * usually a CR so this can be trouble. No STDIO fix seems to work but
 663  * flushing the console appears to do the trick.
 664  */
 665                 {
 666                         HANDLE inh;
 667                         inh = GetStdHandle(STD_INPUT_HANDLE);
 668                         FlushConsoleInputBuffer(inh);
 669                 }
 670 #endif
 671         return(strlen(buf));
 672         }
 673 #endif