1 /* crypto/des/read_pwd.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 (at) 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 $DESCRIPTOR(terminal,"TT"); 265 long tty_orig[3], tty_new[3]; 266 long status; 267 unsigned short channel = 0; 268 #else 269 #if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__) 270 TTY_STRUCT tty_orig,tty_new; 271 #endif 272 #endif 273 int number; 274 int ok; 275 /* statics are simply to avoid warnings about longjmp clobbering 276 things */ 277 static int ps; 278 int is_a_tty; 279 static FILE *tty; 280 char *p; 281 282 if (setjmp(save)) 283 { 284 ok=0; 285 goto error; 286 } 287 288 number=5; 289 ok=0; 290 ps=0; 291 is_a_tty=1; 292 tty=NULL; 293 294 #ifdef OPENSSL_SYS_MSDOS 295 if ((tty=fopen("con","r")) == NULL) 296 tty=stdin; 297 #elif defined(MAC_OS_pre_X) || defined(OPENSSL_SYS_VXWORKS) 298 tty=stdin; 299 #else 300 #ifndef OPENSSL_SYS_MPE 301 if ((tty=fopen("/dev/tty","r")) == NULL) 302 #endif 303 tty=stdin; 304 #endif 305 306 #if defined(TTY_get) && !defined(OPENSSL_SYS_VMS) 307 if (TTY_get(fileno(tty),&tty_orig) == -1) 308 { 309 #ifdef ENOTTY 310 if (errno == ENOTTY) 311 is_a_tty=0; 312 else 313 #endif 314 #ifdef EINVAL 315 /* Ariel Glenn ariel (at) columbia.edu reports that solaris 316 * can return EINVAL instead. This should be ok */ 317 if (errno == EINVAL) 318 is_a_tty=0; 319 else 320 #endif 321 return(-1); 322 } 323 memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig)); 324 #endif 325 #ifdef OPENSSL_SYS_VMS 326 status = sys$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 */ 522
