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533 lines
14 KiB
533 lines
14 KiB
/* crypto/des/read_pwd.c */ |
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
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* All rights reserved. |
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* |
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* This package is an SSL implementation written |
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* by Eric Young (eay@cryptsoft.com). |
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* The implementation was written so as to conform with Netscapes SSL. |
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* |
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* This library is free for commercial and non-commercial use as long as |
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* the following conditions are aheared to. The following conditions |
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* apply to all code found in this distribution, be it the RC4, RSA, |
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation |
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* included with this distribution is covered by the same copyright terms |
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* except that the holder is Tim Hudson (tjh@cryptsoft.com). |
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* |
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* Copyright remains Eric Young's, and as such any Copyright notices in |
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* the code are not to be removed. |
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* If this package is used in a product, Eric Young should be given attribution |
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* as the author of the parts of the library used. |
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* This can be in the form of a textual message at program startup or |
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* in documentation (online or textual) provided with the package. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* "This product includes cryptographic software written by |
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* Eric Young (eay@cryptsoft.com)" |
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* The word 'cryptographic' can be left out if the rouines from the library |
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* being used are not cryptographic related :-). |
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* 4. If you include any Windows specific code (or a derivative thereof) from |
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* the apps directory (application code) you must include an acknowledgement: |
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
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* |
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* The licence and distribution terms for any publically available version or |
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* derivative of this code cannot be changed. i.e. this code cannot simply be |
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* copied and put under another distribution licence |
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* [including the GNU Public Licence.] |
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*/ |
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#include <openssl/e_os2.h> |
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#if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_WIN32) |
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# ifdef OPENSSL_UNISTD |
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# include OPENSSL_UNISTD |
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# else |
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# include <unistd.h> |
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# endif |
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/* |
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* If unistd.h defines _POSIX_VERSION, we conclude that we are on a POSIX |
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* system and have sigaction and termios. |
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*/ |
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# if defined(_POSIX_VERSION) |
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# define SIGACTION |
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# if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY) |
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# define TERMIOS |
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# endif |
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# endif |
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#endif |
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/* Define this if you have sigaction() */ |
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/* #define SIGACTION */ |
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#ifdef WIN16TTY |
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# undef OPENSSL_SYS_WIN16 |
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# undef _WINDOWS |
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# include <graph.h> |
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#endif |
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/* 06-Apr-92 Luke Brennan Support for VMS */ |
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#include "des_locl.h" |
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#include "cryptlib.h" |
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#include <signal.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <setjmp.h> |
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#include <errno.h> |
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#ifdef OPENSSL_SYS_VMS /* prototypes for sys$whatever */ |
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# include <starlet.h> |
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# ifdef __DECC |
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# pragma message disable DOLLARID |
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# endif |
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#endif |
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#ifdef WIN_CONSOLE_BUG |
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# include <windows.h> |
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# ifndef OPENSSL_SYS_WINCE |
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# include <wincon.h> |
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# endif |
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#endif |
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/* |
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* There are 5 types of terminal interface supported, TERMIO, TERMIOS, VMS, |
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* MSDOS and SGTTY |
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*/ |
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#if defined(__sgi) && !defined(TERMIOS) |
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# define TERMIOS |
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# undef TERMIO |
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# undef SGTTY |
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#endif |
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#if defined(linux) && !defined(TERMIO) |
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# undef TERMIOS |
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# define TERMIO |
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# undef SGTTY |
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#endif |
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#ifdef _LIBC |
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# undef TERMIOS |
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# define TERMIO |
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# undef SGTTY |
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#endif |
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#if !defined(TERMIO) && !defined(TERMIOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MSDOS) && !defined(MAC_OS_pre_X) && !defined(MAC_OS_GUSI_SOURCE) |
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# undef TERMIOS |
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# undef TERMIO |
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# define SGTTY |
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#endif |
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#if defined(OPENSSL_SYS_VXWORKS) |
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# undef TERMIOS |
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# undef TERMIO |
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# undef SGTTY |
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#endif |
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#ifdef TERMIOS |
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# include <termios.h> |
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# define TTY_STRUCT struct termios |
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# define TTY_FLAGS c_lflag |
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# define TTY_get(tty,data) tcgetattr(tty,data) |
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# define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data) |
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#endif |
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#ifdef TERMIO |
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# include <termio.h> |
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# define TTY_STRUCT struct termio |
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# define TTY_FLAGS c_lflag |
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# define TTY_get(tty,data) ioctl(tty,TCGETA,data) |
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# define TTY_set(tty,data) ioctl(tty,TCSETA,data) |
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#endif |
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#ifdef SGTTY |
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# include <sgtty.h> |
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# define TTY_STRUCT struct sgttyb |
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# define TTY_FLAGS sg_flags |
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# define TTY_get(tty,data) ioctl(tty,TIOCGETP,data) |
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# define TTY_set(tty,data) ioctl(tty,TIOCSETP,data) |
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#endif |
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#if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(MAC_OS_pre_X) |
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# include <sys/ioctl.h> |
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#endif |
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#if defined(OPENSSL_SYS_MSDOS) && !defined(__CYGWIN32__) && !defined(OPENSSL_SYS_WINCE) |
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# include <conio.h> |
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# define fgets(a,b,c) noecho_fgets(a,b,c) |
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#endif |
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#ifdef OPENSSL_SYS_VMS |
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# include <ssdef.h> |
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# include <iodef.h> |
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# include <ttdef.h> |
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# include <descrip.h> |
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struct IOSB { |
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short iosb$w_value; |
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short iosb$w_count; |
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long iosb$l_info; |
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}; |
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#endif |
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#if defined(MAC_OS_pre_X) || defined(MAC_OS_GUSI_SOURCE) |
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/* |
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* This one needs work. As a matter of fact the code is unoperational |
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* and this is only a trick to get it compiled. |
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* <appro@fy.chalmers.se> |
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*/ |
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# define TTY_STRUCT int |
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#endif |
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#ifndef NX509_SIG |
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# define NX509_SIG 32 |
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#endif |
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static void read_till_nl(FILE *); |
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static void recsig(int); |
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static void pushsig(void); |
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static void popsig(void); |
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#if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16) |
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static int noecho_fgets(char *buf, int size, FILE *tty); |
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#endif |
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#ifdef SIGACTION |
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static struct sigaction savsig[NX509_SIG]; |
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#else |
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static void (*savsig[NX509_SIG]) (int); |
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#endif |
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static jmp_buf save; |
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int des_read_pw_string(char *buf, int length, const char *prompt, int verify) |
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{ |
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char buff[BUFSIZ]; |
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int ret; |
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ret = |
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des_read_pw(buf, buff, (length > BUFSIZ) ? BUFSIZ : length, prompt, |
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verify); |
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OPENSSL_cleanse(buff, BUFSIZ); |
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return (ret); |
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} |
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#ifdef OPENSSL_SYS_WINCE |
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int des_read_pw(char *buf, char *buff, int size, const char *prompt, |
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int verify) |
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{ |
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memset(buf, 0, size); |
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memset(buff, 0, size); |
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return (0); |
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} |
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#elif defined(OPENSSL_SYS_WIN16) |
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int des_read_pw(char *buf, char *buff, int size, char *prompt, int verify) |
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{ |
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memset(buf, 0, size); |
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memset(buff, 0, size); |
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return (0); |
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} |
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#else /* !OPENSSL_SYS_WINCE && !OPENSSL_SYS_WIN16 */ |
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static void read_till_nl(FILE *in) |
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{ |
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# define SIZE 4 |
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char buf[SIZE + 1]; |
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do { |
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fgets(buf, SIZE, in); |
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} while (strchr(buf, '\n') == NULL); |
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} |
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/* return 0 if ok, 1 (or -1) otherwise */ |
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int des_read_pw(char *buf, char *buff, int size, const char *prompt, |
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int verify) |
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{ |
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# ifdef OPENSSL_SYS_VMS |
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struct IOSB iosb; |
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$DESCRIPTOR(terminal, "TT"); |
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long tty_orig[3], tty_new[3]; |
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long status; |
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unsigned short channel = 0; |
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# else |
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# if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__) |
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TTY_STRUCT tty_orig, tty_new; |
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# endif |
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# endif |
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int number; |
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int ok; |
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/* |
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* statics are simply to avoid warnings about longjmp clobbering things |
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*/ |
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static int ps; |
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int is_a_tty; |
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static FILE *tty; |
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char *p; |
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if (setjmp(save)) { |
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ok = 0; |
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goto error; |
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} |
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number = 5; |
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ok = 0; |
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ps = 0; |
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is_a_tty = 1; |
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tty = NULL; |
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# ifdef OPENSSL_SYS_MSDOS |
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if ((tty = fopen("con", "r")) == NULL) |
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tty = stdin; |
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# elif defined(MAC_OS_pre_X) || defined(OPENSSL_SYS_VXWORKS) |
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tty = stdin; |
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# else |
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# ifndef OPENSSL_SYS_MPE |
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if ((tty = fopen("/dev/tty", "r")) == NULL) |
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# endif |
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tty = stdin; |
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# endif |
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# if defined(TTY_get) && !defined(OPENSSL_SYS_VMS) |
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if (TTY_get(fileno(tty), &tty_orig) == -1) { |
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# ifdef ENOTTY |
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if (errno == ENOTTY) |
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is_a_tty = 0; |
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else |
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# endif |
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# ifdef EINVAL |
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/* |
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* Ariel Glenn ariel@columbia.edu reports that solaris can return |
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* EINVAL instead. This should be ok |
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*/ |
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if (errno == EINVAL) |
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is_a_tty = 0; |
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else |
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# endif |
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return (-1); |
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} |
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memcpy(&(tty_new), &(tty_orig), sizeof(tty_orig)); |
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# endif |
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# ifdef OPENSSL_SYS_VMS |
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status = sys$assign(&terminal, &channel, 0, 0); |
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if (status != SS$_NORMAL) |
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return (-1); |
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status = |
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sys$qiow(0, channel, IO$_SENSEMODE, &iosb, 0, 0, tty_orig, 12, 0, 0, |
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0, 0); |
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if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) |
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return (-1); |
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# endif |
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pushsig(); |
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ps = 1; |
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# ifdef TTY_FLAGS |
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tty_new.TTY_FLAGS &= ~ECHO; |
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# endif |
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# if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) |
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if (is_a_tty && (TTY_set(fileno(tty), &tty_new) == -1)) |
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# ifdef OPENSSL_SYS_MPE |
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; /* MPE lies -- echo really has been disabled */ |
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# else |
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return (-1); |
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# endif |
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# endif |
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# ifdef OPENSSL_SYS_VMS |
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tty_new[0] = tty_orig[0]; |
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tty_new[1] = tty_orig[1] | TT$M_NOECHO; |
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tty_new[2] = tty_orig[2]; |
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status = |
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sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12, 0, 0, 0, |
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0); |
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if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) |
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return (-1); |
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# endif |
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ps = 2; |
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while ((!ok) && (number--)) { |
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fputs(prompt, stderr); |
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fflush(stderr); |
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buf[0] = '\0'; |
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fgets(buf, size, tty); |
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if (feof(tty)) |
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goto error; |
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if (ferror(tty)) |
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goto error; |
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if ((p = (char *)strchr(buf, '\n')) != NULL) |
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*p = '\0'; |
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else |
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read_till_nl(tty); |
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if (verify) { |
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fprintf(stderr, "\nVerifying password - %s", prompt); |
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fflush(stderr); |
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buff[0] = '\0'; |
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fgets(buff, size, tty); |
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if (feof(tty)) |
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goto error; |
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if ((p = (char *)strchr(buff, '\n')) != NULL) |
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*p = '\0'; |
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else |
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read_till_nl(tty); |
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if (strcmp(buf, buff) != 0) { |
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fprintf(stderr, "\nVerify failure"); |
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fflush(stderr); |
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break; |
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/* continue; */ |
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} |
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} |
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ok = 1; |
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} |
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error: |
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fprintf(stderr, "\n"); |
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# if 0 |
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perror("fgets(tty)"); |
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# endif |
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/* What can we do if there is an error? */ |
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# if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) |
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if (ps >= 2) |
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TTY_set(fileno(tty), &tty_orig); |
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# endif |
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# ifdef OPENSSL_SYS_VMS |
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if (ps >= 2) |
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status = |
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sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_orig, 12, 0, 0, |
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0, 0); |
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# endif |
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if (ps >= 1) |
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popsig(); |
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if (stdin != tty) |
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fclose(tty); |
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# ifdef OPENSSL_SYS_VMS |
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status = sys$dassgn(channel); |
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# endif |
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return (!ok); |
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} |
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static void pushsig(void) |
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{ |
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int i; |
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# ifdef SIGACTION |
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struct sigaction sa; |
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memset(&sa, 0, sizeof sa); |
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sa.sa_handler = recsig; |
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# endif |
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for (i = 1; i < NX509_SIG; i++) { |
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# ifdef SIGUSR1 |
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if (i == SIGUSR1) |
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continue; |
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# endif |
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# ifdef SIGUSR2 |
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if (i == SIGUSR2) |
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continue; |
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# endif |
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# ifdef SIGACTION |
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sigaction(i, &sa, &savsig[i]); |
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# else |
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savsig[i] = signal(i, recsig); |
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# endif |
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} |
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# ifdef SIGWINCH |
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signal(SIGWINCH, SIG_DFL); |
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# endif |
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} |
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static void popsig(void) |
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{ |
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int i; |
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for (i = 1; i < NX509_SIG; i++) { |
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# ifdef SIGUSR1 |
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if (i == SIGUSR1) |
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continue; |
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# endif |
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# ifdef SIGUSR2 |
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if (i == SIGUSR2) |
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continue; |
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# endif |
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# ifdef SIGACTION |
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sigaction(i, &savsig[i], NULL); |
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# else |
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signal(i, savsig[i]); |
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# endif |
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} |
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} |
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static void recsig(int i) |
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{ |
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longjmp(save, 1); |
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# ifdef LINT |
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i = i; |
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# endif |
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} |
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# ifdef OPENSSL_SYS_MSDOS |
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static int noecho_fgets(char *buf, int size, FILE *tty) |
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{ |
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int i; |
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char *p; |
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|
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p = buf; |
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for (;;) { |
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if (size == 0) { |
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*p = '\0'; |
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break; |
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} |
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size--; |
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# ifdef WIN16TTY |
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i = _inchar(); |
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# else |
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i = getch(); |
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# endif |
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if (i == '\r') |
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i = '\n'; |
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*(p++) = i; |
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if (i == '\n') { |
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*p = '\0'; |
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break; |
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} |
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} |
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# ifdef WIN_CONSOLE_BUG |
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/* |
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* Win95 has several evil console bugs: one of these is that the last |
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* character read using getch() is passed to the next read: this is |
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* usually a CR so this can be trouble. No STDIO fix seems to work but |
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* flushing the console appears to do the trick. |
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*/ |
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{ |
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HANDLE inh; |
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inh = GetStdHandle(STD_INPUT_HANDLE); |
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FlushConsoleInputBuffer(inh); |
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} |
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# endif |
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return (strlen(buf)); |
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} |
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# endif |
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#endif /* !OPENSSL_SYS_WINCE && !WIN16 */
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