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