crypto/external/bsd/openssl/lib/libdes/oread_pwd.c

   1 /* crypto/des/read_pwd.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <unistd.h>
  60 /* If unistd.h defines _POSIX_VERSION, we conclude that we
  61  * are on a POSIX system and have sigaction and termios. */
  62 #if defined(_POSIX_VERSION)
  63
  64 # define SIGACTION
  65 # if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY)
  66 # define TERMIOS
  67 # endif
  68
  69 #endif
  70
  71 /* #define SIGACTION */ /* Define this if you have sigaction() */
  72
  73 #ifdef WIN16TTY
  74 #undef WIN16
  75 #undef _WINDOWS
  76 #include <graph.h>
  77 #endif
  78
  79 /* 06-Apr-92 Luke Brennan    Support for VMS */
  80 #include "des_locl.h"
  81 #include <signal.h>
  82 #include <stdio.h>
  83 #include <string.h>
  84 #include <setjmp.h>
  85 #include <errno.h>
  86
  87 #ifdef VMS                      /* prototypes for sys$whatever */
  88 #include <starlet.h>
  89 #ifdef __DECC
  90 #pragma message disable DOLLARID
  91 #endif
  92 #endif
  93
  94 #ifdef WIN_CONSOLE_BUG
  95 #include <windows.h>
  96 #include <wincon.h>
  97 #endif
  98
  99
 100 /* There are 5 types of terminal interface supported,
 101  * TERMIO, TERMIOS, VMS, MSDOS and SGTTY
 102  */
 103
 104 #if defined(__sgi) && !defined(TERMIOS)
 105 #define TERMIOS
 106 #undef  TERMIO
 107 #undef  SGTTY
 108 #endif
 109
 110 #if defined(linux) && !defined(TERMIO)
 111 #undef  TERMIOS
 112 #define TERMIO
 113 #undef  SGTTY
 114 #endif
 115
 116 #ifdef _LIBC
 117 #undef  TERMIOS
 118 #define TERMIO
 119 #undef  SGTTY
 120 #endif
 121
 122 #if !defined(TERMIO) && !defined(TERMIOS) && !defined(VMS) && !defined(MSDOS) && !defined(MAC_OS_pre_X) && !defined(MAC_OS_GUSI_SOURCE)
 123 #undef  TERMIOS
 124 #undef  TERMIO
 125 #define SGTTY
 126 #endif
 127
 128 #if defined(VXWORKS)
 129 #undef TERMIOS
 130 #undef TERMIO
 131 #undef SGTTY
 132 #endif
 133
 134 #ifdef TERMIOS
 135 #include <termios.h>
 136 #define TTY_STRUCT              struct termios
 137 #define TTY_FLAGS               c_lflag
 138 #define TTY_get(tty,data)       tcgetattr(tty,data)
 139 #define TTY_set(tty,data)       tcsetattr(tty,TCSANOW,data)
 140 #endif
 141
 142 #ifdef TERMIO
 143 #include <termio.h>
 144 #define TTY_STRUCT              struct termio
 145 #define TTY_FLAGS               c_lflag
 146 #define TTY_get(tty,data)       ioctl(tty,TCGETA,data)
 147 #define TTY_set(tty,data)       ioctl(tty,TCSETA,data)
 148 #endif
 149
 150 #ifdef SGTTY
 151 #include <sgtty.h>
 152 #define TTY_STRUCT              struct sgttyb
 153 #define TTY_FLAGS               sg_flags
 154 #define TTY_get(tty,data)       ioctl(tty,TIOCGETP,data)
 155 #define TTY_set(tty,data)       ioctl(tty,TIOCSETP,data)
 156 #endif
 157
 158 #if !defined(_LIBC) && !defined(MSDOS) && !defined(VMS) && !defined(MAC_OS_pre_X)
 159 #include <sys/ioctl.h>
 160 #endif
 161
 162 #if defined(MSDOS) && !defined(__CYGWIN32__)
 163 #include <conio.h>
 164 #define fgets(a,b,c) noecho_fgets(a,b,c)
 165 #endif
 166
 167 #ifdef VMS
 168 #include <ssdef.h>
 169 #include <iodef.h>
 170 #include <ttdef.h>
 171 #include <descrip.h>
 172 struct IOSB {
 173         short iosb$w_value;
 174         short iosb$w_count;
 175         long  iosb$l_info;
 176         };
 177 #endif
 178
 179 #if defined(MAC_OS_pre_X) || defined(MAC_OS_GUSI_SOURCE)
 180 /*
 181  * This one needs work. As a matter of fact the code is unoperational
 182  * and this is only a trick to get it compiled.
 183  *                                      <appro@fy.chalmers.se>
 184  */
 185 #define TTY_STRUCT int
 186 #endif
 187
 188 #ifndef NX509_SIG
 189 #define NX509_SIG 32
 190 #endif
 191
 192 static void read_till_nl(FILE *);
 193 static void recsig(int);
 194 static void pushsig(void);
 195 static void popsig(void);
 196 #if defined(MSDOS) && !defined(WIN16)
 197 static int noecho_fgets(char *buf, int size, FILE *tty);
 198 #endif
 199 #ifdef SIGACTION
 200  static struct sigaction savsig[NX509_SIG];
 201 #else
 202   static void (*savsig[NX509_SIG])(int );
 203 #endif
 204 static jmp_buf save;
 205
 206 int des_read_pw_string(char *buf, int length, const char *prompt,
 207              int verify)
 208         {
 209         char buff[BUFSIZ];
 210         int ret;
 211
 212         ret=des_read_pw(buf,buff,(length>BUFSIZ)?BUFSIZ:length,prompt,verify);
 213         OPENSSL_cleanse(buff,BUFSIZ);
 214         return(ret);
 215         }
 216
 217 #ifndef WIN16
 218
 219 static void read_till_nl(FILE *in)
 220         {
 221 #define SIZE 4
 222         char buf[SIZE+1];
 223
 224         do      {
 225                 fgets(buf,SIZE,in);
 226                 } while (strchr(buf,'\n') == NULL);
 227         }
 228
 229
 230 /* return 0 if ok, 1 (or -1) otherwise */
 231 int des_read_pw(char *buf, char *buff, int size, const char *prompt,
 232              int verify)
 233         {
 234 #ifdef VMS
 235         struct IOSB iosb;
 236         $DESCRIPTOR(terminal,"TT");
 237         long tty_orig[3], tty_new[3];
 238         long status;
 239         unsigned short channel = 0;
 240 #else
 241 #if !defined(MSDOS) && !defined(VXWORKS)
 242         TTY_STRUCT tty_orig,tty_new;
 243 #endif
 244 #endif
 245         int number;
 246         int ok;
 247         /* statics are simply to avoid warnings about longjmp clobbering
 248            things */
 249         static int ps;
 250         int is_a_tty;
 251         static FILE *tty;
 252         char *p;
 253
 254         if (setjmp(save))
 255                 {
 256                 ok=0;
 257                 goto error;
 258                 }
 259
 260         number=5;
 261         ok=0;
 262         ps=0;
 263         is_a_tty=1;
 264         tty=NULL;
 265
 266 #ifdef MSDOS
 267         if ((tty=fopen("con","r")) == NULL)
 268                 tty=stdin;
 269 #elif defined(MAC_OS_pre_X) || defined(VXWORKS)
 270         tty=stdin;
 271 #else
 272 #ifndef MPE
 273         if ((tty=fopen("/dev/tty","r")) == NULL)
 274 #endif
 275                 tty=stdin;
 276 #endif
 277
 278 #if defined(TTY_get) && !defined(VMS)
 279         if (TTY_get(fileno(tty),&tty_orig) == -1)
 280                 {
 281 #ifdef ENOTTY
 282                 if (errno == ENOTTY)
 283                         is_a_tty=0;
 284                 else
 285 #endif
 286 #ifdef EINVAL
 287                 /* Ariel Glenn ariel@columbia.edu reports that solaris
 288                  * can return EINVAL instead.  This should be ok */
 289                 if (errno == EINVAL)
 290                         is_a_tty=0;
 291                 else
 292 #endif
 293                         return(-1);
 294                 }
 295         memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig));
 296 #endif
 297 #ifdef VMS
 298         status = sys$assign(&terminal,&channel,0,0);
 299         if (status != SS$_NORMAL)
 300                 return(-1);
 301         status=sys$qiow(0,channel,IO$_SENSEMODE,&iosb,0,0,tty_orig,12,0,0,0,0);
 302         if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
 303                 return(-1);
 304 #endif
 305
 306         pushsig();
 307         ps=1;
 308
 309 #ifdef TTY_FLAGS
 310         tty_new.TTY_FLAGS &= ~ECHO;
 311 #endif
 312
 313 #if defined(TTY_set) && !defined(VMS)
 314         if (is_a_tty && (TTY_set(fileno(tty),&tty_new) == -1))
 315 #ifdef MPE
 316                 ; /* MPE lies -- echo really has been disabled */
 317 #else
 318                 return(-1);
 319 #endif
 320 #endif
 321 #ifdef VMS
 322         tty_new[0] = tty_orig[0];
 323         tty_new[1] = tty_orig[1] | TT$M_NOECHO;
 324         tty_new[2] = tty_orig[2];
 325         status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0,tty_new,12,0,0,0,0);
 326         if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
 327                 return(-1);
 328 #endif
 329         ps=2;
 330
 331         while ((!ok) && (number--))
 332                 {
 333                 fputs(prompt,stderr);
 334                 fflush(stderr);
 335
 336                 buf[0]='\0';
 337                 fgets(buf,size,tty);
 338                 if (feof(tty)) goto error;
 339                 if (ferror(tty)) goto error;
 340                 if ((p=(char *)strchr(buf,'\n')) != NULL)
 341                         *p='\0';
 342                 else    read_till_nl(tty);
 343                 if (verify)
 344                         {
 345                         fprintf(stderr,"\nVerifying password - %s",prompt);
 346                         fflush(stderr);
 347                         buff[0]='\0';
 348                         fgets(buff,size,tty);
 349                         if (feof(tty)) goto error;
 350                         if ((p=(char *)strchr(buff,'\n')) != NULL)
 351                                 *p='\0';
 352                         else    read_till_nl(tty);
 353
 354                         if (strcmp(buf,buff) != 0)
 355                                 {
 356                                 fprintf(stderr,"\nVerify failure");
 357                                 fflush(stderr);
 358                                 break;
 359                                 /* continue; */
 360                                 }
 361                         }
 362                 ok=1;
 363                 }
 364
 365 error:
 366         fprintf(stderr,"\n");
 367 #if 0
 368         perror("fgets(tty)");
 369 #endif
 370         /* What can we do if there is an error? */
 371 #if defined(TTY_set) && !defined(VMS)
 372         if (ps >= 2) TTY_set(fileno(tty),&tty_orig);
 373 #endif
 374 #ifdef VMS
 375         if (ps >= 2)
 376                 status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0
 377                         ,tty_orig,12,0,0,0,0);
 378 #endif
 379
 380         if (ps >= 1) popsig();
 381         if (stdin != tty) fclose(tty);
 382 #ifdef VMS
 383         status = sys$dassgn(channel);
 384 #endif
 385         return(!ok);
 386         }
 387
 388 #else /* WIN16 */
 389
 390 int des_read_pw(char *buf, char *buff, int size, char *prompt, int verify)
 391         {
 392         memset(buf,0,size);
 393         memset(buff,0,size);
 394         return(0);
 395         }
 396
 397 #endif
 398
 399 static void pushsig(void)
 400         {
 401         int i;
 402 #ifdef SIGACTION
 403         struct sigaction sa;
 404
 405         memset(&sa,0,sizeof sa);
 406         sa.sa_handler=recsig;
 407 #endif
 408
 409         for (i=1; i<NX509_SIG; i++)
 410                 {
 411 #ifdef SIGUSR1
 412                 if (i == SIGUSR1)
 413                         continue;
 414 #endif
 415 #ifdef SIGUSR2
 416                 if (i == SIGUSR2)
 417                         continue;
 418 #endif
 419 #ifdef SIGACTION
 420                 sigaction(i,&sa,&savsig[i]);
 421 #else
 422                 savsig[i]=signal(i,recsig);
 423 #endif
 424                 }
 425
 426 #ifdef SIGWINCH
 427         signal(SIGWINCH,SIG_DFL);
 428 #endif
 429         }
 430
 431 static void popsig(void)
 432         {
 433         int i;
 434
 435         for (i=1; i<NX509_SIG; i++)
 436                 {
 437 #ifdef SIGUSR1
 438                 if (i == SIGUSR1)
 439                         continue;
 440 #endif
 441 #ifdef SIGUSR2
 442                 if (i == SIGUSR2)
 443                         continue;
 444 #endif
 445 #ifdef SIGACTION
 446                 sigaction(i,&savsig[i],NULL);
 447 #else
 448                 signal(i,savsig[i]);
 449 #endif
 450                 }
 451         }
 452
 453 static void recsig(int i)
 454         {
 455         longjmp(save,1);
 456 #ifdef LINT
 457         i=i;
 458 #endif
 459         }
 460
 461 #if defined(MSDOS) && !defined(WIN16)
 462 static int noecho_fgets(char *buf, int size, FILE *tty)
 463         {
 464         int i;
 465         char *p;
 466
 467         p=buf;
 468         for (;;)
 469                 {
 470                 if (size == 0)
 471                         {
 472                         *p='\0';
 473                         break;
 474                         }
 475                 size--;
 476 #ifdef WIN16TTY
 477                 i=_inchar();
 478 #else
 479                 i=getch();
 480 #endif
 481                 if (i == '\r') i='\n';
 482                 *(p++)=i;
 483                 if (i == '\n')
 484                         {
 485                         *p='\0';
 486                         break;
 487                         }
 488                 }
 489 #ifdef WIN_CONSOLE_BUG
 490 /* Win95 has several evil console bugs: one of these is that the
 491  * last character read using getch() is passed to the next read: this is
 492  * usually a CR so this can be trouble. No STDIO fix seems to work but
 493  * flushing the console appears to do the trick.
 494  */
 495                 {
 496                         HANDLE inh;
 497                         inh = GetStdHandle(STD_INPUT_HANDLE);
 498                         FlushConsoleInputBuffer(inh);
 499                 }
 500 #endif
 501         return(strlen(buf));
 502         }
 503 #endif