ref: bae3ac29fc39bc36329abf1823004c0d79b2f6f0
dir: /sys/src/ape/lib/openssl/crypto/des/read_pwd.c/
/* crypto/des/read_pwd.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <openssl/e_os2.h>
#if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_WIN32)
#ifdef OPENSSL_UNISTD
# include OPENSSL_UNISTD
#else
# include <unistd.h>
#endif
/* If unistd.h defines _POSIX_VERSION, we conclude that we
* are on a POSIX system and have sigaction and termios. */
#if defined(_POSIX_VERSION)
# define SIGACTION
# if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY)
# define TERMIOS
# endif
#endif
#endif
/* #define SIGACTION */ /* Define this if you have sigaction() */
#ifdef WIN16TTY
#undef OPENSSL_SYS_WIN16
#undef _WINDOWS
#include <graph.h>
#endif
/* 06-Apr-92 Luke Brennan Support for VMS */
#include "des_locl.h"
#include "cryptlib.h"
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <setjmp.h>
#include <errno.h>
#ifdef OPENSSL_SYS_VMS /* prototypes for sys$whatever */
#include <starlet.h>
#ifdef __DECC
#pragma message disable DOLLARID
#endif
#endif
#ifdef WIN_CONSOLE_BUG
#include <windows.h>
#ifndef OPENSSL_SYS_WINCE
#include <wincon.h>
#endif
#endif
/* There are 5 types of terminal interface supported,
* TERMIO, TERMIOS, VMS, MSDOS and SGTTY
*/
#if defined(__sgi) && !defined(TERMIOS)
#define TERMIOS
#undef TERMIO
#undef SGTTY
#endif
#if defined(linux) && !defined(TERMIO)
#undef TERMIOS
#define TERMIO
#undef SGTTY
#endif
#ifdef _LIBC
#undef TERMIOS
#define TERMIO
#undef SGTTY
#endif
#if !defined(TERMIO) && !defined(TERMIOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MSDOS) && !defined(MAC_OS_pre_X) && !defined(MAC_OS_GUSI_SOURCE)
#undef TERMIOS
#undef TERMIO
#define SGTTY
#endif
#if defined(OPENSSL_SYS_VXWORKS)
#undef TERMIOS
#undef TERMIO
#undef SGTTY
#endif
#ifdef TERMIOS
#include <termios.h>
#define TTY_STRUCT struct termios
#define TTY_FLAGS c_lflag
#define TTY_get(tty,data) tcgetattr(tty,data)
#define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data)
#endif
#ifdef TERMIO
#include <termio.h>
#define TTY_STRUCT struct termio
#define TTY_FLAGS c_lflag
#define TTY_get(tty,data) ioctl(tty,TCGETA,data)
#define TTY_set(tty,data) ioctl(tty,TCSETA,data)
#endif
#ifdef SGTTY
#include <sgtty.h>
#define TTY_STRUCT struct sgttyb
#define TTY_FLAGS sg_flags
#define TTY_get(tty,data) ioctl(tty,TIOCGETP,data)
#define TTY_set(tty,data) ioctl(tty,TIOCSETP,data)
#endif
#if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(MAC_OS_pre_X)
#include <sys/ioctl.h>
#endif
#if defined(OPENSSL_SYS_MSDOS) && !defined(__CYGWIN32__) && !defined(OPENSSL_SYS_WINCE)
#include <conio.h>
#define fgets(a,b,c) noecho_fgets(a,b,c)
#endif
#ifdef OPENSSL_SYS_VMS
#include <ssdef.h>
#include <iodef.h>
#include <ttdef.h>
#include <descrip.h>
struct IOSB {
short iosb$w_value;
short iosb$w_count;
long iosb$l_info;
};
#endif
#if defined(MAC_OS_pre_X) || defined(MAC_OS_GUSI_SOURCE)
/*
* This one needs work. As a matter of fact the code is unoperational
* and this is only a trick to get it compiled.
* <appro@fy.chalmers.se>
*/
#define TTY_STRUCT int
#endif
#ifndef NX509_SIG
#define NX509_SIG 32
#endif
static void read_till_nl(FILE *);
static void recsig(int);
static void pushsig(void);
static void popsig(void);
#if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16)
static int noecho_fgets(char *buf, int size, FILE *tty);
#endif
#ifdef SIGACTION
static struct sigaction savsig[NX509_SIG];
#else
static void (*savsig[NX509_SIG])(int );
#endif
static jmp_buf save;
int des_read_pw_string(char *buf, int length, const char *prompt,
int verify)
{
char buff[BUFSIZ];
int ret;
ret=des_read_pw(buf,buff,(length>BUFSIZ)?BUFSIZ:length,prompt,verify);
OPENSSL_cleanse(buff,BUFSIZ);
return(ret);
}
#ifdef OPENSSL_SYS_WINCE
int des_read_pw(char *buf, char *buff, int size, const char *prompt, int verify)
{
memset(buf,0,size);
memset(buff,0,size);
return(0);
}
#elif defined(OPENSSL_SYS_WIN16)
int des_read_pw(char *buf, char *buff, int size, char *prompt, int verify)
{
memset(buf,0,size);
memset(buff,0,size);
return(0);
}
#else /* !OPENSSL_SYS_WINCE && !OPENSSL_SYS_WIN16 */
static void read_till_nl(FILE *in)
{
#define SIZE 4
char buf[SIZE+1];
do {
fgets(buf,SIZE,in);
} while (strchr(buf,'\n') == NULL);
}
/* return 0 if ok, 1 (or -1) otherwise */
int des_read_pw(char *buf, char *buff, int size, const char *prompt,
int verify)
{
#ifdef OPENSSL_SYS_VMS
struct IOSB iosb;
$DESCRIPTOR(terminal,"TT");
long tty_orig[3], tty_new[3];
long status;
unsigned short channel = 0;
#else
#if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__)
TTY_STRUCT tty_orig,tty_new;
#endif
#endif
int number;
int ok;
/* statics are simply to avoid warnings about longjmp clobbering
things */
static int ps;
int is_a_tty;
static FILE *tty;
char *p;
if (setjmp(save))
{
ok=0;
goto error;
}
number=5;
ok=0;
ps=0;
is_a_tty=1;
tty=NULL;
#ifdef OPENSSL_SYS_MSDOS
if ((tty=fopen("con","r")) == NULL)
tty=stdin;
#elif defined(MAC_OS_pre_X) || defined(OPENSSL_SYS_VXWORKS)
tty=stdin;
#else
#ifndef OPENSSL_SYS_MPE
if ((tty=fopen("/dev/tty","r")) == NULL)
#endif
tty=stdin;
#endif
#if defined(TTY_get) && !defined(OPENSSL_SYS_VMS)
if (TTY_get(fileno(tty),&tty_orig) == -1)
{
#ifdef ENOTTY
if (errno == ENOTTY)
is_a_tty=0;
else
#endif
#ifdef EINVAL
/* Ariel Glenn ariel@columbia.edu reports that solaris
* can return EINVAL instead. This should be ok */
if (errno == EINVAL)
is_a_tty=0;
else
#endif
return(-1);
}
memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig));
#endif
#ifdef OPENSSL_SYS_VMS
status = sys$assign(&terminal,&channel,0,0);
if (status != SS$_NORMAL)
return(-1);
status=sys$qiow(0,channel,IO$_SENSEMODE,&iosb,0,0,tty_orig,12,0,0,0,0);
if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
return(-1);
#endif
pushsig();
ps=1;
#ifdef TTY_FLAGS
tty_new.TTY_FLAGS &= ~ECHO;
#endif
#if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
if (is_a_tty && (TTY_set(fileno(tty),&tty_new) == -1))
#ifdef OPENSSL_SYS_MPE
; /* MPE lies -- echo really has been disabled */
#else
return(-1);
#endif
#endif
#ifdef OPENSSL_SYS_VMS
tty_new[0] = tty_orig[0];
tty_new[1] = tty_orig[1] | TT$M_NOECHO;
tty_new[2] = tty_orig[2];
status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0,tty_new,12,0,0,0,0);
if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
return(-1);
#endif
ps=2;
while ((!ok) && (number--))
{
fputs(prompt,stderr);
fflush(stderr);
buf[0]='\0';
fgets(buf,size,tty);
if (feof(tty)) goto error;
if (ferror(tty)) goto error;
if ((p=(char *)strchr(buf,'\n')) != NULL)
*p='\0';
else read_till_nl(tty);
if (verify)
{
fprintf(stderr,"\nVerifying password - %s",prompt);
fflush(stderr);
buff[0]='\0';
fgets(buff,size,tty);
if (feof(tty)) goto error;
if ((p=(char *)strchr(buff,'\n')) != NULL)
*p='\0';
else read_till_nl(tty);
if (strcmp(buf,buff) != 0)
{
fprintf(stderr,"\nVerify failure");
fflush(stderr);
break;
/* continue; */
}
}
ok=1;
}
error:
fprintf(stderr,"\n");
#if 0
perror("fgets(tty)");
#endif
/* What can we do if there is an error? */
#if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
if (ps >= 2) TTY_set(fileno(tty),&tty_orig);
#endif
#ifdef OPENSSL_SYS_VMS
if (ps >= 2)
status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0
,tty_orig,12,0,0,0,0);
#endif
if (ps >= 1) popsig();
if (stdin != tty) fclose(tty);
#ifdef OPENSSL_SYS_VMS
status = sys$dassgn(channel);
#endif
return(!ok);
}
static void pushsig(void)
{
int i;
#ifdef SIGACTION
struct sigaction sa;
memset(&sa,0,sizeof sa);
sa.sa_handler=recsig;
#endif
for (i=1; i<NX509_SIG; i++)
{
#ifdef SIGUSR1
if (i == SIGUSR1)
continue;
#endif
#ifdef SIGUSR2
if (i == SIGUSR2)
continue;
#endif
#ifdef SIGACTION
sigaction(i,&sa,&savsig[i]);
#else
savsig[i]=signal(i,recsig);
#endif
}
#ifdef SIGWINCH
signal(SIGWINCH,SIG_DFL);
#endif
}
static void popsig(void)
{
int i;
for (i=1; i<NX509_SIG; i++)
{
#ifdef SIGUSR1
if (i == SIGUSR1)
continue;
#endif
#ifdef SIGUSR2
if (i == SIGUSR2)
continue;
#endif
#ifdef SIGACTION
sigaction(i,&savsig[i],NULL);
#else
signal(i,savsig[i]);
#endif
}
}
static void recsig(int i)
{
longjmp(save,1);
#ifdef LINT
i=i;
#endif
}
#ifdef OPENSSL_SYS_MSDOS
static int noecho_fgets(char *buf, int size, FILE *tty)
{
int i;
char *p;
p=buf;
for (;;)
{
if (size == 0)
{
*p='\0';
break;
}
size--;
#ifdef WIN16TTY
i=_inchar();
#else
i=getch();
#endif
if (i == '\r') i='\n';
*(p++)=i;
if (i == '\n')
{
*p='\0';
break;
}
}
#ifdef WIN_CONSOLE_BUG
/* Win95 has several evil console bugs: one of these is that the
* last character read using getch() is passed to the next read: this is
* usually a CR so this can be trouble. No STDIO fix seems to work but
* flushing the console appears to do the trick.
*/
{
HANDLE inh;
inh = GetStdHandle(STD_INPUT_HANDLE);
FlushConsoleInputBuffer(inh);
}
#endif
return(strlen(buf));
}
#endif
#endif /* !OPENSSL_SYS_WINCE && !WIN16 */