Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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 */ |