[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.]
 */

/* #define SIGACTION */ /* Define this if you have sigaction() */
#ifdef WIN16TTY
#undef WIN16
#undef _WINDOWS
#include <graph.h>
#endif

#if defined(WIN32) && !defined(WINNT)
#define WIN_CONSOLE_BUG
#endif


/* 06-Apr-92 Luke Brennan    Support for VMS */
#include "des_locl.h"
#include <signal.h>
#include <string.h>
#include <setjmp.h>
#include <errno.h>

#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

#ifndef NOPROTO
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
#else
static void read_till_nl();
static void recsig();
static void pushsig();
static void popsig();
#if defined(MSDOS) && !defined(WIN16)
static int noecho_fgets();
#endif
#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(buf, length, prompt, verify)
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(in)
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(buf, buff, size, prompt, verify)
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(buf, buff, size, prompt, verify)
char *buf;
char *buff;
int size;
char *prompt;
int verify;
	{ 
	memset(buf,0,size);
	memset(buff,0,size);
	return(0);
	}

#endif

static void pushsig()
	{
	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,NULL,&savsig[i]);
#else
		savsig[i]=signal(i,recsig);
#endif
		}

#ifdef SIGWINCH
	signal(SIGWINCH,SIG_DFL);
#endif
	}

static void popsig()
	{
	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(i)
int i;
	{
	longjmp(save,1);
#ifdef LINT
	i=i;
#endif
	}

#if defined(MSDOS) && !defined(WIN16)
static int noecho_fgets(buf,size,tty)
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
58964a49	59	/* #define SIGACTION / / Define this if you have sigaction() */
d02b48c6 RE	60	#ifdef WIN16TTY
	61	#undef WIN16
	62	#undef _WINDOWS
	63	#include <graph.h>
	64	#endif
	65
d00b7aad DSH	66	#if defined(WIN32) && !defined(WINNT)
	67	#define WIN_CONSOLE_BUG
	68	#endif
	69
	70
d02b48c6 RE	71	/* 06-Apr-92 Luke Brennan Support for VMS */
	72	#include "des_locl.h"
	73	#include <signal.h>
	74	#include <string.h>
	75	#include <setjmp.h>
	76	#include <errno.h>
	77
d00b7aad DSH	78	#ifdef WIN_CONSOLE_BUG
	79	#include <windows.h>
	80	#include <wincon.h>
	81	#endif
	82
	83
d02b48c6 RE	84	/* There are 5 types of terminal interface supported,
	85	* TERMIO, TERMIOS, VMS, MSDOS and SGTTY
	86	*/
	87
	88	#if defined(__sgi) && !defined(TERMIOS)
	89	#define TERMIOS
	90	#undef TERMIO
	91	#undef SGTTY
	92	#endif
	93
	94	#if defined(linux) && !defined(TERMIO)
	95	#undef TERMIOS
	96	#define TERMIO
	97	#undef SGTTY
	98	#endif
	99
	100	#ifdef _LIBC
	101	#undef TERMIOS
	102	#define TERMIO
	103	#undef SGTTY
	104	#endif
	105
	106	#if !defined(TERMIO) && !defined(TERMIOS) && !defined(VMS) && !defined(MSDOS)
	107	#undef TERMIOS
	108	#undef TERMIO
	109	#define SGTTY
	110	#endif
	111
	112	#ifdef TERMIOS
	113	#include <termios.h>
	114	#define TTY_STRUCT struct termios
	115	#define TTY_FLAGS c_lflag
	116	#define TTY_get(tty,data) tcgetattr(tty,data)
	117	#define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data)
	118	#endif
	119
	120	#ifdef TERMIO
	121	#include <termio.h>
	122	#define TTY_STRUCT struct termio
	123	#define TTY_FLAGS c_lflag
	124	#define TTY_get(tty,data) ioctl(tty,TCGETA,data)
	125	#define TTY_set(tty,data) ioctl(tty,TCSETA,data)
	126	#endif
	127
	128	#ifdef SGTTY
	129	#include <sgtty.h>
	130	#define TTY_STRUCT struct sgttyb
	131	#define TTY_FLAGS sg_flags
	132	#define TTY_get(tty,data) ioctl(tty,TIOCGETP,data)
	133	#define TTY_set(tty,data) ioctl(tty,TIOCSETP,data)
	134	#endif
	135
	136	#if !defined(_LIBC) && !defined(MSDOS) && !defined(VMS)
	137	#include <sys/ioctl.h>
	138	#endif
	139
	140	#ifdef MSDOS
	141	#include <conio.h>
	142	#define fgets(a,b,c) noecho_fgets(a,b,c)
	143	#endif
	144
	145	#ifdef VMS
	146	#include <ssdef.h>
	147	#include <iodef.h>
148	#include <ttdef.h>
149	#include <descrip.h>
150	struct IOSB {
151	short iosb$w_value;
152	short iosb$w_count;
153	long iosb$l_info;
154	};
155	#endif
156
157	#ifndef NX509_SIG
158	#define NX509_SIG 32
159	#endif
160
161	#ifndef NOPROTO
162	static void read_till_nl(FILE *);
163	static void recsig(int);
164	static void pushsig(void);
165	static void popsig(void);
166	#if defined(MSDOS) && !defined(WIN16)
167	static int noecho_fgets(char buf, int size, FILE tty);
168	#endif
169	#else
170	static void read_till_nl();
171	static void recsig();
172	static void pushsig();
173	static void popsig();
174	#if defined(MSDOS) && !defined(WIN16)
175	static int noecho_fgets();
176	#endif
177	#endif
178
58964a49 RE	179	#ifdef SIGACTION
58964a49 RE	180	static struct sigaction savsig[NX509_SIG];
d02b48c6	181	#else
58964a49 RE	182	# ifndef NOPROTO
	183	static void (*savsig[NX509_SIG])(int );
	184	# else
	185	static void (*savsig[NX509_SIG])();
	186	# endif
d02b48c6 RE	187	#endif
	188	static jmp_buf save;
	189
	190	int des_read_pw_string(buf, length, prompt, verify)
	191	char *buf;
	192	int length;
08853ba8	193	const char *prompt;
d02b48c6 RE	194	int verify;
	195	{
	196	char buff[BUFSIZ];
	197	int ret;
	198
	199	ret=des_read_pw(buf,buff,(length>BUFSIZ)?BUFSIZ:length,prompt,verify);
	200	memset(buff,0,BUFSIZ);
	201	return(ret);
	202	}
	203
	204	#ifndef WIN16
	205
	206	static void read_till_nl(in)
	207	FILE *in;
	208	{
	209	#define SIZE 4
	210	char buf[SIZE+1];
	211
	212	do {
	213	fgets(buf,SIZE,in);
	214	} while (strchr(buf,'\n') == NULL);
	215	}
	216
	217
	218	/* return 0 if ok, 1 (or -1) otherwise */
	219	int des_read_pw(buf, buff, size, prompt, verify)
	220	char *buf;
	221	char *buff;
	222	int size;
4e31df2c	223	const char *prompt;
d02b48c6 RE	224	int verify;
	225	{
	226	#ifdef VMS
	227	struct IOSB iosb;
	228	$DESCRIPTOR(terminal,"TT");
	229	long tty_orig[3], tty_new[3];
	230	long status;
	231	unsigned short channel = 0;
	232	#else
	233	#ifndef MSDOS
	234	TTY_STRUCT tty_orig,tty_new;
	235	#endif
	236	#endif
15799403 BL	237	int number;
	238	int ok;
	239	/* statics are simply to avoid warnings about longjmp clobbering
	240	things */
	241	static int ps;
	242	int is_a_tty;
	243	static FILE *tty;
d02b48c6 RE	244	char *p;
d02b48c6 RE	245
15799403 BL	246	if (setjmp(save))
	247	{
	248	ok=0;
	249	goto error;
	250	}
	251
	252	number=5;
	253	ok=0;
	254	ps=0;
	255	is_a_tty=1;
	256	tty=NULL;
	257
d02b48c6 RE	258	#ifndef MSDOS
	259	if ((tty=fopen("/dev/tty","r")) == NULL)
	260	tty=stdin;
	261	#else /* MSDOS */
	262	if ((tty=fopen("con","r")) == NULL)
	263	tty=stdin;
	264	#endif /* MSDOS */
	265
	266	#if defined(TTY_get) && !defined(VMS)
	267	if (TTY_get(fileno(tty),&tty_orig) == -1)
	268	{
	269	#ifdef ENOTTY
	270	if (errno == ENOTTY)
	271	is_a_tty=0;
	272	else
58964a49 RE	273	#endif
	274	#ifdef EINVAL
	275	/* Ariel Glenn ariel@columbia.edu reports that solaris
	276	* can return EINVAL instead. This should be ok */
	277	if (errno == EINVAL)
	278	is_a_tty=0;
	279	else
d02b48c6 RE	280	#endif
	281	return(-1);
	282	}
	283	memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig));
	284	#endif
	285	#ifdef VMS
	286	status = SYS$ASSIGN(&terminal,&channel,0,0);
	287	if (status != SS$_NORMAL)
	288	return(-1);
	289	status=SYS$QIOW(0,channel,IO$_SENSEMODE,&iosb,0,0,tty_orig,12,0,0,0,0);
	290	if ((status != SS$_NORMAL) \|\| (iosb.iosb$w_value != SS$_NORMAL))
	291	return(-1);
	292	#endif
	293
d02b48c6 RE	294	pushsig();
	295	ps=1;
	296
	297	#ifdef TTY_FLAGS
	298	tty_new.TTY_FLAGS &= ~ECHO;
	299	#endif
	300
	301	#if defined(TTY_set) && !defined(VMS)
	302	if (is_a_tty && (TTY_set(fileno(tty),&tty_new) == -1))
	303	return(-1);
	304	#endif
	305	#ifdef VMS
	306	tty_new[0] = tty_orig[0];
	307	tty_new[1] = tty_orig[1] \| TT$M_NOECHO;
	308	tty_new[2] = tty_orig[2];
	309	status = SYS$QIOW(0,channel,IO$_SETMODE,&iosb,0,0,tty_new,12,0,0,0,0);
	310	if ((status != SS$_NORMAL) \|\| (iosb.iosb$w_value != SS$_NORMAL))
	311	return(-1);
	312	#endif
	313	ps=2;
	314
	315	while ((!ok) && (number--))
	316	{
	317	fputs(prompt,stderr);
	318	fflush(stderr);
	319
	320	buf[0]='\0';
	321	fgets(buf,size,tty);
	322	if (feof(tty)) goto error;
	323	if (ferror(tty)) goto error;
	324	if ((p=(char *)strchr(buf,'\n')) != NULL)
	325	*p='\0';
	326	else read_till_nl(tty);
	327	if (verify)
	328	{
	329	fprintf(stderr,"\nVerifying password - %s",prompt);
	330	fflush(stderr);
	331	buff[0]='\0';
	332	fgets(buff,size,tty);
	333	if (feof(tty)) goto error;
	334	if ((p=(char *)strchr(buff,'\n')) != NULL)
	335	*p='\0';
	336	else read_till_nl(tty);
	337
	338	if (strcmp(buf,buff) != 0)
	339	{
	340	fprintf(stderr,"\nVerify failure");
	341	fflush(stderr);
	342	break;
	343	/* continue; */
	344	}
	345	}
	346	ok=1;
	347	}
	348
	349	error:
	350	fprintf(stderr,"\n");
	351	#ifdef DEBUG
	352	perror("fgets(tty)");
	353	#endif
	354	/* What can we do if there is an error? */
	355	#if defined(TTY_set) && !defined(VMS)
	356	if (ps >= 2) TTY_set(fileno(tty),&tty_orig);
	357	#endif
358	#ifdef VMS
359	if (ps >= 2)
360	status = SYS$QIOW(0,channel,IO$_SETMODE,&iosb,0,0
361	,tty_orig,12,0,0,0,0);
362	#endif
363
364	if (ps >= 1) popsig();
365	if (stdin != tty) fclose(tty);
366	#ifdef VMS
367	status = SYS$DASSGN(channel);
368	#endif
369	return(!ok);
370	}
371
372	#else /* WIN16 */
373
374	int des_read_pw(buf, buff, size, prompt, verify)
375	char *buf;
376	char *buff;
377	int size;
378	char *prompt;
379	int verify;
380	{
381	memset(buf,0,size);
382	memset(buff,0,size);
383	return(0);
384	}
385
386	#endif
387
388	static void pushsig()
389	{
390	int i;
391
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
	403	sigaction(i,NULL,&savsig[i]);
	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
	414	static void popsig()
	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	}
	435
	436	static void recsig(i)
	437	int i;
	438	{
	439	longjmp(save,1);
	440	#ifdef LINT
	441	i=i;
	442	#endif
	443	}
	444
	445	#if defined(MSDOS) && !defined(WIN16)
	446	static int noecho_fgets(buf,size,tty)
	447	char *buf;
	448	int size;
	449	FILE *tty;
	450	{
	451	int i;
	452	char *p;
	453
	454	p=buf;
	455	for (;;)
	456	{
	457	if (size == 0)
	458	{
	459	*p='\0';
	460	break;
	461	}
	462	size--;
	463	#ifdef WIN16TTY
	464	i=_inchar();
	465	#else
	466	i=getch();
	467	#endif
	468	if (i == '\r') i='\n';
	469	*(p++)=i;
	470	if (i == '\n')
	471	{
	472	*p='\0';
	473	break;
	474	}
	475	}
d00b7aad DSH	476	#ifdef WIN_CONSOLE_BUG
	477	/* Win95 has several evil console bugs: one of these is that the
	478	* last character read using getch() is passed to the next read: this is
	479	* usually a CR so this can be trouble. No STDIO fix seems to work but
	480	* flushing the console appears to do the trick.
	481	*/
	482	{
	483	HANDLE inh;
	484	inh = GetStdHandle(STD_INPUT_HANDLE);
	485	FlushConsoleInputBuffer(inh);
	486	}
	487	#endif
d02b48c6 RE	488	return(strlen(buf));
	489	}
	490	#endif