534 lines
14 KiB
C
534 lines
14 KiB
C
/* 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(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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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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