release/src/router/openssl/crypto/des/read_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 <openssl/e_os2.h>
  60 #if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_WIN32)
  61 #ifdef OPENSSL_UNISTD
  62 # include OPENSSL_UNISTD
  63 #else
  64 # include <unistd.h>
  65 #endif
  66 /* If unistd.h defines _POSIX_VERSION, we conclude that we
  67  * are on a POSIX system and have sigaction and termios. */
  68 #if defined(_POSIX_VERSION)
  69
  70 # define SIGACTION
  71 # if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY)
  72 # define TERMIOS
  73 # endif
  74
  75 #endif
  76 #endif
  77
  78 /* #define SIGACTION */ /* Define this if you have sigaction() */
  79
  80 #ifdef WIN16TTY
  81 #undef OPENSSL_SYS_WIN16
  82 #undef _WINDOWS
  83 #include <graph.h>
  84 #endif
  85
  86 /* 06-Apr-92 Luke Brennan    Support for VMS */
  87 #include "des_locl.h"
  88 #include "cryptlib.h"
  89 #include <signal.h>
  90 #include <stdio.h>
  91 #include <string.h>
  92 #include <setjmp.h>
  93 #include <errno.h>
  94
  95 #ifdef OPENSSL_SYS_VMS                  /* prototypes for sys$whatever */
  96 #include <starlet.h>
  97 #ifdef __DECC
  98 #pragma message disable DOLLARID
  99 #endif
 100 #endif
 101
 102 #ifdef WIN_CONSOLE_BUG
 103 #include <windows.h>
 104 #ifndef OPENSSL_SYS_WINCE
 105 #include <wincon.h>
 106 #endif
 107 #endif
 108
 109
 110 /* There are 5 types of terminal interface supported,
 111  * TERMIO, TERMIOS, VMS, MSDOS and SGTTY
 112  */
 113
 114 #if defined(__sgi) && !defined(TERMIOS)
 115 #define TERMIOS
 116 #undef  TERMIO
 117 #undef  SGTTY
 118 #endif
 119
 120 #if defined(linux) && !defined(TERMIO)
 121 #undef  TERMIOS
 122 #define TERMIO
 123 #undef  SGTTY
 124 #endif
 125
 126 #ifdef _LIBC
 127 #undef  TERMIOS
 128 #define TERMIO
 129 #undef  SGTTY
 130 #endif
 131
 132 #if !defined(TERMIO) && !defined(TERMIOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MSDOS) && !defined(MAC_OS_pre_X) && !defined(MAC_OS_GUSI_SOURCE)
 133 #undef  TERMIOS
 134 #undef  TERMIO
 135 #define SGTTY
 136 #endif
 137
 138 #if defined(OPENSSL_SYS_VXWORKS)
 139 #undef TERMIOS
 140 #undef TERMIO
 141 #undef SGTTY
 142 #endif
 143
 144 #ifdef TERMIOS
 145 #include <termios.h>
 146 #define TTY_STRUCT              struct termios
 147 #define TTY_FLAGS               c_lflag
 148 #define TTY_get(tty,data)       tcgetattr(tty,data)
 149 #define TTY_set(tty,data)       tcsetattr(tty,TCSANOW,data)
 150 #endif
 151
 152 #ifdef TERMIO
 153 #include <termio.h>
 154 #define TTY_STRUCT              struct termio
 155 #define TTY_FLAGS               c_lflag
 156 #define TTY_get(tty,data)       ioctl(tty,TCGETA,data)
 157 #define TTY_set(tty,data)       ioctl(tty,TCSETA,data)
 158 #endif
 159
 160 #ifdef SGTTY
 161 #include <sgtty.h>
 162 #define TTY_STRUCT              struct sgttyb
 163 #define TTY_FLAGS               sg_flags
 164 #define TTY_get(tty,data)       ioctl(tty,TIOCGETP,data)
 165 #define TTY_set(tty,data)       ioctl(tty,TIOCSETP,data)
 166 #endif
 167
 168 #if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(MAC_OS_pre_X)
 169 #include <sys/ioctl.h>
 170 #endif
 171
 172 #if defined(OPENSSL_SYS_MSDOS) && !defined(__CYGWIN32__) && !defined(OPENSSL_SYS_WINCE)
 173 #include <conio.h>
 174 #define fgets(a,b,c) noecho_fgets(a,b,c)
 175 #endif
 176
 177 #ifdef OPENSSL_SYS_VMS
 178 #include <ssdef.h>
 179 #include <iodef.h>
 180 #include <ttdef.h>
 181 #include <descrip.h>
 182 struct IOSB {
 183         short iosb$w_value;
 184         short iosb$w_count;
 185         long  iosb$l_info;
 186         };
 187 #endif
 188
 189 #if defined(MAC_OS_pre_X) || defined(MAC_OS_GUSI_SOURCE)
 190 /*
 191  * This one needs work. As a matter of fact the code is unoperational
 192  * and this is only a trick to get it compiled.
 193  *                                      <appro@fy.chalmers.se>
 194  */
 195 #define TTY_STRUCT int
 196 #endif
 197
 198 #ifndef NX509_SIG
 199 #define NX509_SIG 32
 200 #endif
 201
 202 static void read_till_nl(FILE *);
 203 static void recsig(int);
 204 static void pushsig(void);
 205 static void popsig(void);
 206 #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16)
 207 static int noecho_fgets(char *buf, int size, FILE *tty);
 208 #endif
 209 #ifdef SIGACTION
 210  static struct sigaction savsig[NX509_SIG];
 211 #else
 212   static void (*savsig[NX509_SIG])(int );
 213 #endif
 214 static jmp_buf save;
 215
 216 int des_read_pw_string(char *buf, int length, const char *prompt,
 217              int verify)
 218         {
 219         char buff[BUFSIZ];
 220         int ret;
 221
 222         ret=des_read_pw(buf,buff,(length>BUFSIZ)?BUFSIZ:length,prompt,verify);
 223         OPENSSL_cleanse(buff,BUFSIZ);
 224         return(ret);
 225         }
 226
 227 #ifdef OPENSSL_SYS_WINCE
 228
 229 int des_read_pw(char *buf, char *buff, int size, const char *prompt, int verify)
 230         {
 231         memset(buf,0,size);
 232         memset(buff,0,size);
 233         return(0);
 234         }
 235
 236 #elif defined(OPENSSL_SYS_WIN16)
 237
 238 int des_read_pw(char *buf, char *buff, int size, char *prompt, int verify)
 239         {
 240         memset(buf,0,size);
 241         memset(buff,0,size);
 242         return(0);
 243         }
 244
 245 #else /* !OPENSSL_SYS_WINCE && !OPENSSL_SYS_WIN16 */
 246
 247 static void read_till_nl(FILE *in)
 248         {
 249 #define SIZE 4
 250         char buf[SIZE+1];
 251
 252         do      {
 253                 fgets(buf,SIZE,in);
 254                 } while (strchr(buf,'\n') == NULL);
 255         }
 256
 257
 258 /* return 0 if ok, 1 (or -1) otherwise */
 259 int des_read_pw(char *buf, char *buff, int size, const char *prompt,
 260              int verify)
 261         {
 262 #ifdef OPENSSL_SYS_VMS
 263         struct IOSB iosb;
 264         $DESCRIPTOR(terminal,"TT");
 265         long tty_orig[3], tty_new[3];
 266         long status;
 267         unsigned short channel = 0;
 268 #else
 269 #if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__)
 270         TTY_STRUCT tty_orig,tty_new;
 271 #endif
 272 #endif
 273         int number;
 274         int ok;
 275         /* statics are simply to avoid warnings about longjmp clobbering
 276            things */
 277         static int ps;
 278         int is_a_tty;
 279         static FILE *tty;
 280         char *p;
 281
 282         if (setjmp(save))
 283                 {
 284                 ok=0;
 285                 goto error;
 286                 }
 287
 288         number=5;
 289         ok=0;
 290         ps=0;
 291         is_a_tty=1;
 292         tty=NULL;
 293
 294 #ifdef OPENSSL_SYS_MSDOS
 295         if ((tty=fopen("con","r")) == NULL)
 296                 tty=stdin;
 297 #elif defined(MAC_OS_pre_X) || defined(OPENSSL_SYS_VXWORKS)
 298         tty=stdin;
 299 #else
 300 #ifndef OPENSSL_SYS_MPE
 301         if ((tty=fopen("/dev/tty","r")) == NULL)
 302 #endif
 303                 tty=stdin;
 304 #endif
 305
 306 #if defined(TTY_get) && !defined(OPENSSL_SYS_VMS)
 307         if (TTY_get(fileno(tty),&tty_orig) == -1)
 308                 {
 309 #ifdef ENOTTY
 310                 if (errno == ENOTTY)
 311                         is_a_tty=0;
 312                 else
 313 #endif
 314 #ifdef EINVAL
 315                 /* Ariel Glenn ariel@columbia.edu reports that solaris
 316                  * can return EINVAL instead.  This should be ok */
 317                 if (errno == EINVAL)
 318                         is_a_tty=0;
 319                 else
 320 #endif
 321                         return(-1);
 322                 }
 323         memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig));
 324 #endif
 325 #ifdef OPENSSL_SYS_VMS
 326         status = sys$assign(&terminal,&channel,0,0);
 327         if (status != SS$_NORMAL)
 328                 return(-1);
 329         status=sys$qiow(0,channel,IO$_SENSEMODE,&iosb,0,0,tty_orig,12,0,0,0,0);
 330         if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
 331                 return(-1);
 332 #endif
 333
 334         pushsig();
 335         ps=1;
 336
 337 #ifdef TTY_FLAGS
 338         tty_new.TTY_FLAGS &= ~ECHO;
 339 #endif
 340
 341 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
 342         if (is_a_tty && (TTY_set(fileno(tty),&tty_new) == -1))
 343 #ifdef OPENSSL_SYS_MPE
 344                 ; /* MPE lies -- echo really has been disabled */
 345 #else
 346                 return(-1);
 347 #endif
 348 #endif
 349 #ifdef OPENSSL_SYS_VMS
 350         tty_new[0] = tty_orig[0];
 351         tty_new[1] = tty_orig[1] | TT$M_NOECHO;
 352         tty_new[2] = tty_orig[2];
 353         status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0,tty_new,12,0,0,0,0);
 354         if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
 355                 return(-1);
 356 #endif
 357         ps=2;
 358
 359         while ((!ok) && (number--))
 360                 {
 361                 fputs(prompt,stderr);
 362                 fflush(stderr);
 363
 364                 buf[0]='\0';
 365                 fgets(buf,size,tty);
 366                 if (feof(tty)) goto error;
 367                 if (ferror(tty)) goto error;
 368                 if ((p=(char *)strchr(buf,'\n')) != NULL)
 369                         *p='\0';
 370                 else    read_till_nl(tty);
 371                 if (verify)
 372                         {
 373                         fprintf(stderr,"\nVerifying password - %s",prompt);
 374                         fflush(stderr);
 375                         buff[0]='\0';
 376                         fgets(buff,size,tty);
 377                         if (feof(tty)) goto error;
 378                         if ((p=(char *)strchr(buff,'\n')) != NULL)
 379                                 *p='\0';
 380                         else    read_till_nl(tty);
 381
 382                         if (strcmp(buf,buff) != 0)
 383                                 {
 384                                 fprintf(stderr,"\nVerify failure");
 385                                 fflush(stderr);
 386                                 break;
 387                                 /* continue; */
 388                                 }
 389                         }
 390                 ok=1;
 391                 }
 392
 393 error:
 394         fprintf(stderr,"\n");
 395 #if 0
 396         perror("fgets(tty)");
 397 #endif
 398         /* What can we do if there is an error? */
 399 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
 400         if (ps >= 2) TTY_set(fileno(tty),&tty_orig);
 401 #endif
 402 #ifdef OPENSSL_SYS_VMS
 403         if (ps >= 2)
 404                 status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0
 405                         ,tty_orig,12,0,0,0,0);
 406 #endif
 407
 408         if (ps >= 1) popsig();
 409         if (stdin != tty) fclose(tty);
 410 #ifdef OPENSSL_SYS_VMS
 411         status = sys$dassgn(channel);
 412 #endif
 413         return(!ok);
 414         }
 415
 416 static void pushsig(void)
 417         {
 418         int i;
 419 #ifdef SIGACTION
 420         struct sigaction sa;
 421
 422         memset(&sa,0,sizeof sa);
 423         sa.sa_handler=recsig;
 424 #endif
 425
 426         for (i=1; i<NX509_SIG; i++)
 427                 {
 428 #ifdef SIGUSR1
 429                 if (i == SIGUSR1)
 430                         continue;
 431 #endif
 432 #ifdef SIGUSR2
 433                 if (i == SIGUSR2)
 434                         continue;
 435 #endif
 436 #ifdef SIGACTION
 437                 sigaction(i,&sa,&savsig[i]);
 438 #else
 439                 savsig[i]=signal(i,recsig);
 440 #endif
 441                 }
 442
 443 #ifdef SIGWINCH
 444         signal(SIGWINCH,SIG_DFL);
 445 #endif
 446         }
 447
 448 static void popsig(void)
 449         {
 450         int i;
 451
 452         for (i=1; i<NX509_SIG; i++)
 453                 {
 454 #ifdef SIGUSR1
 455                 if (i == SIGUSR1)
 456                         continue;
 457 #endif
 458 #ifdef SIGUSR2
 459                 if (i == SIGUSR2)
 460                         continue;
 461 #endif
 462 #ifdef SIGACTION
 463                 sigaction(i,&savsig[i],NULL);
 464 #else
 465                 signal(i,savsig[i]);
 466 #endif
 467                 }
 468         }
 469
 470 static void recsig(int i)
 471         {
 472         longjmp(save,1);
 473 #ifdef LINT
 474         i=i;
 475 #endif
 476         }
 477
 478 #ifdef OPENSSL_SYS_MSDOS
 479 static int noecho_fgets(char *buf, int size, FILE *tty)
 480         {
 481         int i;
 482         char *p;
 483
 484         p=buf;
 485         for (;;)
 486                 {
 487                 if (size == 0)
 488                         {
 489                         *p='\0';
 490                         break;
 491                         }
 492                 size--;
 493 #ifdef WIN16TTY
 494                 i=_inchar();
 495 #else
 496                 i=getch();
 497 #endif
 498                 if (i == '\r') i='\n';
 499                 *(p++)=i;
 500                 if (i == '\n')
 501                         {
 502                         *p='\0';
 503                         break;
 504                         }
 505                 }
 506 #ifdef WIN_CONSOLE_BUG
 507 /* Win95 has several evil console bugs: one of these is that the
 508  * last character read using getch() is passed to the next read: this is
 509  * usually a CR so this can be trouble. No STDIO fix seems to work but
 510  * flushing the console appears to do the trick.
 511  */
 512                 {
 513                         HANDLE inh;
 514                         inh = GetStdHandle(STD_INPUT_HANDLE);
 515                         FlushConsoleInputBuffer(inh);
 516                 }
 517 #endif
 518         return(strlen(buf));
 519         }
 520 #endif
 521 #endif /* !OPENSSL_SYS_WINCE && !WIN16 */