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> 239struct 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 266static struct sigaction savsig[NX509_SIG]; 267#else 268static void (*savsig[NX509_SIG])(int ); 269#endif 270 271#ifdef OPENSSL_SYS_VMS 272static struct IOSB iosb; 273static $DESCRIPTOR(terminal,"TT"); 274static long tty_orig[3], tty_new[3]; /* XXX Is there any guarantee that this will always suffice for the actual structures? */ 275static long status; 276static unsigned short channel = 0; 277#else 278#if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__) 279static TTY_STRUCT tty_orig,tty_new; 280#endif 281#endif 282static FILE *tty_in, *tty_out; 283static int is_a_tty; 284 285/* Declare static functions */ 286#if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) 287static void read_till_nl(FILE *); 288static void recsig(int); 289static void pushsig(void); 290static void popsig(void); 291#endif 292#if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16) 293static int noecho_fgets(char *buf, int size, FILE *tty); 294#endif 295static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl); 296 297static int read_string(UI *ui, UI_STRING *uis); 298static int write_string(UI *ui, UI_STRING *uis); 299 300static int open_console(UI *ui); 301static int echo_console(UI *ui); 302static int noecho_console(UI *ui); 303static int close_console(UI *ui); 304 305static 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 */ 317UI_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. */ 324static 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 339static 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 */ 380static 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 390static volatile sig_atomic_t intr_signal; 391#endif 392 393static 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 439error: 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. */ 458static 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 507static 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 529static 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 551static 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 */ 566static 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 602static 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 624static 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) 632static 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 674