[thirdparty/openssl.git] / 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.]
 */

#if !defined(MSDOS) && !defined(VMS) && !defined(WIN32)
#include <unistd.h>
/* 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 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 <string.h>
#include <setjmp.h>
#include <errno.h>

#ifdef VMS			/* prototypes for sys$whatever */
#include <starlet.h>
#ifdef __DECC
#pragma message disable DOLLARID
#endif
#endif

#ifdef WIN_CONSOLE_BUG
#include <windows.h>
#include <wincon.h>
#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(VMS) && !defined(MSDOS)
#undef  TERMIOS
#undef  TERMIO
#define 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(MSDOS) && !defined(VMS)
#include <sys/ioctl.h>
#endif

#ifdef MSDOS
#include <conio.h>
#define fgets(a,b,c) noecho_fgets(a,b,c)
#endif

#ifdef 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

#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(MSDOS) && !defined(WIN16)
static int noecho_fgets(char *buf, int size, FILE *tty);
#endif
#ifdef SIGACTION
 static struct sigaction savsig[NX509_SIG];
#else
# ifndef NOPROTO
  static void (*savsig[NX509_SIG])(int );
# else
  static void (*savsig[NX509_SIG])();
# endif
#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);
	memset(buff,0,BUFSIZ);
	return(ret);
	}

#ifndef 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 VMS
	struct IOSB iosb;
	$DESCRIPTOR(terminal,"TT");
	long tty_orig[3], tty_new[3];
	long status;
	unsigned short channel = 0;
#else
#ifndef MSDOS
	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;

#ifndef MSDOS
	if ((tty=fopen("/dev/tty","r")) == NULL)
		tty=stdin;
#else /* MSDOS */
	if ((tty=fopen("con","r")) == NULL)
		tty=stdin;
#endif /* MSDOS */

#if defined(TTY_get) && !defined(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 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(VMS)
	if (is_a_tty && (TTY_set(fileno(tty),&tty_new) == -1))
		return(-1);
#endif
#ifdef 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");
#ifdef DEBUG
	perror("fgets(tty)");
#endif
	/* What can we do if there is an error? */
#if defined(TTY_set) && !defined(VMS)
	if (ps >= 2) TTY_set(fileno(tty),&tty_orig);
#endif
#ifdef 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 VMS
	status = sys$dassgn(channel);
#endif
	return(!ok);
	}

#else /* 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);
	}

#endif

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
	}

#if defined(MSDOS) && !defined(WIN16)
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
Commit	Line	Data
d02b48c6	1	/* crypto/des/read_pwd.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	3	* All rights reserved.
	4	*
	5	* This package is an SSL implementation written
	6	* by Eric Young (eay@cryptsoft.com).
	7	* The implementation was written so as to conform with Netscapes SSL.
	8	*
	9	* This library is free for commercial and non-commercial use as long as
	10	* the following conditions are aheared to. The following conditions
	11	* apply to all code found in this distribution, be it the RC4, RSA,
	12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	13	* included with this distribution is covered by the same copyright terms
	14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	15	*
	16	* Copyright remains Eric Young's, and as such any Copyright notices in
	17	* the code are not to be removed.
	18	* If this package is used in a product, Eric Young should be given attribution
	19	* as the author of the parts of the library used.
	20	* This can be in the form of a textual message at program startup or
	21	* in documentation (online or textual) provided with the package.
	22	*
	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	26	* 1. Redistributions of source code must retain the copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* 2. Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* 3. All advertising materials mentioning features or use of this software
	32	* must display the following acknowledgement:
	33	* "This product includes cryptographic software written by
	34	* Eric Young (eay@cryptsoft.com)"
	35	* The word 'cryptographic' can be left out if the rouines from the library
	36	* being used are not cryptographic related :-).
	37	* 4. If you include any Windows specific code (or a derivative thereof) from
	38	* the apps directory (application code) you must include an acknowledgement:
	39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	40	*
	41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
	52	*
	53	* The licence and distribution terms for any publically available version or
	54	* derivative of this code cannot be changed. i.e. this code cannot simply be
	55	* copied and put under another distribution licence
	56	* [including the GNU Public Licence.]
	57	*/
	58
f0f1b4e4	59	#if !defined(MSDOS) && !defined(VMS) && !defined(WIN32)
fa3da3cf BM	60	#include <unistd.h>
	61	/* If unistd.h defines _POSIX_VERSION, we conclude that we
	62	* are on a POSIX system and have sigaction and termios. */
	63	#if defined(_POSIX_VERSION)
	64
	65	# define SIGACTION
	66	# if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY)
	67	# define TERMIOS
	68	# endif
	69
	70	#endif
	71	#endif
	72
58964a49	73	/* #define SIGACTION / / Define this if you have sigaction() */
fa3da3cf	74
d02b48c6 RE	75	#ifdef WIN16TTY
	76	#undef WIN16
	77	#undef _WINDOWS
	78	#include <graph.h>
	79	#endif
	80
	81	/* 06-Apr-92 Luke Brennan Support for VMS */
	82	#include "des_locl.h"
6e064240	83	#include "cryptlib.h"
d02b48c6 RE	84	#include <signal.h>
	85	#include <string.h>
	86	#include <setjmp.h>
	87	#include <errno.h>
	88
7d7d2cbc UM	89	#ifdef VMS /* prototypes for sys$whatever */
	90	#include <starlet.h>
	91	#ifdef __DECC
	92	#pragma message disable DOLLARID
	93	#endif
	94	#endif
	95
d00b7aad DSH	96	#ifdef WIN_CONSOLE_BUG
	97	#include <windows.h>
	98	#include <wincon.h>
	99	#endif
	100
	101
d02b48c6 RE	102	/* There are 5 types of terminal interface supported,
	103	* TERMIO, TERMIOS, VMS, MSDOS and SGTTY
	104	*/
	105
	106	#if defined(__sgi) && !defined(TERMIOS)
	107	#define TERMIOS
	108	#undef TERMIO
	109	#undef SGTTY
	110	#endif
	111
	112	#if defined(linux) && !defined(TERMIO)
	113	#undef TERMIOS
	114	#define TERMIO
	115	#undef SGTTY
	116	#endif
	117
	118	#ifdef _LIBC
	119	#undef TERMIOS
	120	#define TERMIO
	121	#undef SGTTY
	122	#endif
	123
	124	#if !defined(TERMIO) && !defined(TERMIOS) && !defined(VMS) && !defined(MSDOS)
	125	#undef TERMIOS
	126	#undef TERMIO
	127	#define SGTTY
	128	#endif
	129
	130	#ifdef TERMIOS
	131	#include <termios.h>
	132	#define TTY_STRUCT struct termios
	133	#define TTY_FLAGS c_lflag
	134	#define TTY_get(tty,data) tcgetattr(tty,data)
	135	#define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data)
	136	#endif
	137
	138	#ifdef TERMIO
	139	#include <termio.h>
	140	#define TTY_STRUCT struct termio
	141	#define TTY_FLAGS c_lflag
	142	#define TTY_get(tty,data) ioctl(tty,TCGETA,data)
	143	#define TTY_set(tty,data) ioctl(tty,TCSETA,data)
	144	#endif
	145
	146	#ifdef SGTTY
	147	#include <sgtty.h>
	148	#define TTY_STRUCT struct sgttyb
	149	#define TTY_FLAGS sg_flags
	150	#define TTY_get(tty,data) ioctl(tty,TIOCGETP,data)
	151	#define TTY_set(tty,data) ioctl(tty,TIOCSETP,data)
	152	#endif
	153
	154	#if !defined(_LIBC) && !defined(MSDOS) && !defined(VMS)
	155	#include <sys/ioctl.h>
	156	#endif
	157
	158	#ifdef MSDOS
	159	#include <conio.h>
	160	#define fgets(a,b,c) noecho_fgets(a,b,c)
	161	#endif
	162
	163	#ifdef VMS
	164	#include <ssdef.h>
	165	#include <iodef.h>
166	#include <ttdef.h>
167	#include <descrip.h>
168	struct IOSB {
169	short iosb$w_value;
170	short iosb$w_count;
171	long iosb$l_info;
172	};
173	#endif
174
175	#ifndef NX509_SIG
176	#define NX509_SIG 32
177	#endif
178
d02b48c6 RE	179	static void read_till_nl(FILE *);
	180	static void recsig(int);
	181	static void pushsig(void);
	182	static void popsig(void);
	183	#if defined(MSDOS) && !defined(WIN16)
	184	static int noecho_fgets(char buf, int size, FILE tty);
	185	#endif
58964a49 RE	186	#ifdef SIGACTION
58964a49 RE	187	static struct sigaction savsig[NX509_SIG];
d02b48c6	188	#else
58964a49 RE	189	# ifndef NOPROTO
	190	static void (*savsig[NX509_SIG])(int );
	191	# else
	192	static void (*savsig[NX509_SIG])();
	193	# endif
d02b48c6 RE	194	#endif
	195	static jmp_buf save;
	196
6b691a5c UM	197	int des_read_pw_string(char buf, int length, const char prompt,
6b691a5c UM	198	int verify)
d02b48c6 RE	199	{
	200	char buff[BUFSIZ];
	201	int ret;
	202
	203	ret=des_read_pw(buf,buff,(length>BUFSIZ)?BUFSIZ:length,prompt,verify);
	204	memset(buff,0,BUFSIZ);
	205	return(ret);
	206	}
	207
	208	#ifndef WIN16
	209
6b691a5c	210	static void read_till_nl(FILE *in)
d02b48c6 RE	211	{
	212	#define SIZE 4
	213	char buf[SIZE+1];
	214
	215	do {
	216	fgets(buf,SIZE,in);
	217	} while (strchr(buf,'\n') == NULL);
	218	}
	219
	220
	221	/* return 0 if ok, 1 (or -1) otherwise */
6b691a5c UM	222	int des_read_pw(char buf, char buff, int size, const char *prompt,
6b691a5c UM	223	int verify)
d02b48c6 RE	224	{
	225	#ifdef VMS
	226	struct IOSB iosb;
	227	$DESCRIPTOR(terminal,"TT");
	228	long tty_orig[3], tty_new[3];
	229	long status;
	230	unsigned short channel = 0;
	231	#else
	232	#ifndef MSDOS
	233	TTY_STRUCT tty_orig,tty_new;
	234	#endif
	235	#endif
15799403 BL	236	int number;
	237	int ok;
	238	/* statics are simply to avoid warnings about longjmp clobbering
	239	things */
	240	static int ps;
	241	int is_a_tty;
	242	static FILE *tty;
d02b48c6 RE	243	char *p;
d02b48c6 RE	244
15799403 BL	245	if (setjmp(save))
	246	{
	247	ok=0;
	248	goto error;
	249	}
	250
	251	number=5;
	252	ok=0;
	253	ps=0;
	254	is_a_tty=1;
	255	tty=NULL;
	256
d02b48c6 RE	257	#ifndef MSDOS
	258	if ((tty=fopen("/dev/tty","r")) == NULL)
	259	tty=stdin;
	260	#else /* MSDOS */
	261	if ((tty=fopen("con","r")) == NULL)
	262	tty=stdin;
	263	#endif /* MSDOS */
	264
	265	#if defined(TTY_get) && !defined(VMS)
	266	if (TTY_get(fileno(tty),&tty_orig) == -1)
	267	{
	268	#ifdef ENOTTY
	269	if (errno == ENOTTY)
	270	is_a_tty=0;
	271	else
58964a49 RE	272	#endif
	273	#ifdef EINVAL
	274	/* Ariel Glenn ariel@columbia.edu reports that solaris
	275	* can return EINVAL instead. This should be ok */
	276	if (errno == EINVAL)
	277	is_a_tty=0;
	278	else
d02b48c6 RE	279	#endif
	280	return(-1);
	281	}
	282	memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig));
	283	#endif
	284	#ifdef VMS
7d7d2cbc	285	status = sys$assign(&terminal,&channel,0,0);
d02b48c6 RE	286	if (status != SS$_NORMAL)
d02b48c6 RE	287	return(-1);
7d7d2cbc	288	status=sys$qiow(0,channel,IO$_SENSEMODE,&iosb,0,0,tty_orig,12,0,0,0,0);
d02b48c6 RE	289	if ((status != SS$_NORMAL) \|\| (iosb.iosb$w_value != SS$_NORMAL))
	290	return(-1);
	291	#endif
	292
d02b48c6 RE	293	pushsig();
	294	ps=1;
	295
	296	#ifdef TTY_FLAGS
	297	tty_new.TTY_FLAGS &= ~ECHO;
	298	#endif
	299
	300	#if defined(TTY_set) && !defined(VMS)
	301	if (is_a_tty && (TTY_set(fileno(tty),&tty_new) == -1))
	302	return(-1);
	303	#endif
	304	#ifdef VMS
	305	tty_new[0] = tty_orig[0];
	306	tty_new[1] = tty_orig[1] \| TT$M_NOECHO;
	307	tty_new[2] = tty_orig[2];
7d7d2cbc	308	status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0,tty_new,12,0,0,0,0);
d02b48c6 RE	309	if ((status != SS$_NORMAL) \|\| (iosb.iosb$w_value != SS$_NORMAL))
	310	return(-1);
	311	#endif
	312	ps=2;
	313
	314	while ((!ok) && (number--))
	315	{
	316	fputs(prompt,stderr);
	317	fflush(stderr);
	318
	319	buf[0]='\0';
	320	fgets(buf,size,tty);
	321	if (feof(tty)) goto error;
	322	if (ferror(tty)) goto error;
	323	if ((p=(char *)strchr(buf,'\n')) != NULL)
	324	*p='\0';
	325	else read_till_nl(tty);
	326	if (verify)
	327	{
	328	fprintf(stderr,"\nVerifying password - %s",prompt);
	329	fflush(stderr);
	330	buff[0]='\0';
	331	fgets(buff,size,tty);
	332	if (feof(tty)) goto error;
	333	if ((p=(char *)strchr(buff,'\n')) != NULL)
	334	*p='\0';
	335	else read_till_nl(tty);
	336
	337	if (strcmp(buf,buff) != 0)
	338	{
	339	fprintf(stderr,"\nVerify failure");
	340	fflush(stderr);
	341	break;
	342	/* continue; */
	343	}
	344	}
	345	ok=1;
	346	}
	347
	348	error:
	349	fprintf(stderr,"\n");
	350	#ifdef DEBUG
	351	perror("fgets(tty)");
	352	#endif
	353	/* What can we do if there is an error? */
7d7d2cbc	354	#if defined(TTY_set) && !defined(VMS)
d02b48c6 RE	355	if (ps >= 2) TTY_set(fileno(tty),&tty_orig);
	356	#endif
	357	#ifdef VMS
	358	if (ps >= 2)
7d7d2cbc	359	status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0
d02b48c6 RE	360	,tty_orig,12,0,0,0,0);
	361	#endif
	362
	363	if (ps >= 1) popsig();
	364	if (stdin != tty) fclose(tty);
	365	#ifdef VMS
7d7d2cbc	366	status = sys$dassgn(channel);
d02b48c6 RE	367	#endif
	368	return(!ok);
	369	}
	370
	371	#else /* WIN16 */
	372
6b691a5c	373	int des_read_pw(char buf, char buff, int size, char *prompt, int verify)
d02b48c6 RE	374	{
	375	memset(buf,0,size);
	376	memset(buff,0,size);
	377	return(0);
	378	}
	379
	380	#endif
	381
6b691a5c	382	static void pushsig(void)
d02b48c6 RE	383	{
d02b48c6 RE	384	int i;
215c24fc BL	385	#ifdef SIGACTION
	386	struct sigaction sa;
	387
	388	memset(&sa,0,sizeof sa);
	389	sa.sa_handler=recsig;
	390	#endif
d02b48c6 RE	391
d02b48c6 RE	392	for (i=1; i<NX509_SIG; i++)
58964a49 RE	393	{
	394	#ifdef SIGUSR1
	395	if (i == SIGUSR1)
	396	continue;
	397	#endif
	398	#ifdef SIGUSR2
	399	if (i == SIGUSR2)
	400	continue;
	401	#endif
	402	#ifdef SIGACTION
215c24fc	403	sigaction(i,&sa,&savsig[i]);
58964a49	404	#else
d02b48c6	405	savsig[i]=signal(i,recsig);
58964a49 RE	406	#endif
58964a49 RE	407	}
d02b48c6 RE	408
	409	#ifdef SIGWINCH
	410	signal(SIGWINCH,SIG_DFL);
	411	#endif
	412	}
	413
6b691a5c	414	static void popsig(void)
d02b48c6 RE	415	{
	416	int i;
	417
	418	for (i=1; i<NX509_SIG; i++)
58964a49 RE	419	{
	420	#ifdef SIGUSR1
	421	if (i == SIGUSR1)
	422	continue;
	423	#endif
	424	#ifdef SIGUSR2
	425	if (i == SIGUSR2)
	426	continue;
	427	#endif
	428	#ifdef SIGACTION
	429	sigaction(i,&savsig[i],NULL);
	430	#else
d02b48c6	431	signal(i,savsig[i]);
58964a49 RE	432	#endif
58964a49 RE	433	}
d02b48c6 RE	434	}
d02b48c6 RE	435
6b691a5c	436	static void recsig(int i)
d02b48c6 RE	437	{
	438	longjmp(save,1);
	439	#ifdef LINT
	440	i=i;
	441	#endif
	442	}
	443
	444	#if defined(MSDOS) && !defined(WIN16)
6b691a5c	445	static int noecho_fgets(char buf, int size, FILE tty)
d02b48c6 RE	446	{
	447	int i;
	448	char *p;
	449
	450	p=buf;
	451	for (;;)
	452	{
	453	if (size == 0)
	454	{
	455	*p='\0';
	456	break;
	457	}
	458	size--;
	459	#ifdef WIN16TTY
	460	i=_inchar();
	461	#else
	462	i=getch();
	463	#endif
	464	if (i == '\r') i='\n';
	465	*(p++)=i;
	466	if (i == '\n')
	467	{
	468	*p='\0';
	469	break;
	470	}
	471	}
d00b7aad DSH	472	#ifdef WIN_CONSOLE_BUG
	473	/* Win95 has several evil console bugs: one of these is that the
	474	* last character read using getch() is passed to the next read: this is
	475	* usually a CR so this can be trouble. No STDIO fix seems to work but
	476	* flushing the console appears to do the trick.
	477	*/
	478	{
	479	HANDLE inh;
	480	inh = GetStdHandle(STD_INPUT_HANDLE);
	481	FlushConsoleInputBuffer(inh);
	482	}
	483	#endif
d02b48c6 RE	484	return(strlen(buf));
	485	}
	486	#endif