/* crypto/ui/ui_openssl.c -*- mode:C; c-file-style: "eay" -*- */

 /* Written by Richard Levitte (richard@levitte.org) and others

  * for the OpenSSL project 2001.

  */

 /* ====================================================================

  * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.

  *

  * 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 above 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 acknowledgment:

  *    "This product includes software developed by the OpenSSL Project

  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"

  *

  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

  *    endorse or promote products derived from this software without

  *    prior written permission. For written permission, please contact

  *    openssl-core@openssl.org.

  *

  * 5. Products derived from this software may not be called "OpenSSL"

  *    nor may "OpenSSL" appear in their names without prior written

  *    permission of the OpenSSL Project.

  *

  * 6. Redistributions of any form whatsoever must retain the following

  *    acknowledgment:

  *    "This product includes software developed by the OpenSSL Project

  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"

  *

  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

  * EXPRESSED 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 OpenSSL PROJECT OR

  * ITS 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.

  * ====================================================================

  *

  * This product includes cryptographic software written by Eric Young

  * (eay@cryptsoft.com).  This product includes software written by Tim

  * Hudson (tjh@cryptsoft.com).

  *

  */

 /* The lowest level part of this file was previously in 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.]

  */

 /*

  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

  */

 #include <openssl/e_os2.h>

 /* need for #define _POSIX_C_SOURCE arises whenever you pass -ansi to gcc

  * [maybe others?], because it masks interfaces not discussed in standard,

  * sigaction and fileno included. -pedantic would be more appropriate for

  * the intended purposes, but we can't prevent users from adding -ansi.

  */

 #define _POSIX_C_SOURCE 1

 #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__))) 

 #undef _POSIX_C_SOURCE

 #endif

 #ifndef SYMBIAN

 #include <signal.h> 

 #endif

 #include <stdio.h>

 #include <string.h>

 #include <errno.h>

 #if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS)

 # 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) && !defined(SYMBIAN)

 #  define SIGACTION

 #  if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY)

 #   define TERMIOS

 #  endif

 # endif

 #endif

 #ifdef WIN16TTY

 # undef OPENSSL_SYS_WIN16

 # undef WIN16

 # undef _WINDOWS

 # include <graph.h>

 #endif

 /* 06-Apr-92 Luke Brennan    Support for VMS */

 #include "ui_locl.h"

 #include "cryptlib.h"

 #ifdef OPENSSL_SYS_VMS		/* prototypes for sys$whatever */

 # include <starlet.h>

 # ifdef __DECC

 #  pragma message disable DOLLARID

 # endif

 #endif

 #ifndef SYMBIAN

 #ifdef WIN_CONSOLE_BUG

 # include <windows.h>

 #ifndef OPENSSL_SYS_WINCE

 # include <wincon.h>

 #endif

 #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(OPENSSL_SYS_MACINTOSH_CLASSIC) && !defined(MAC_OS_GUSI_SOURCE)

 # undef  TERMIOS

 # undef  TERMIO

 # define SGTTY

 #endif

 #if defined(OPENSSL_SYS_VXWORKS)

 #undef TERMIOS

 #undef TERMIO

 #undef SGTTY

 #endif

 #if defined(OPENSSL_SYS_NETWARE)

 #undef TERMIOS

 #undef TERMIO

 #undef SGTTY

 #endif

 #if defined(SYMBIAN)

 #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(OPENSSL_SYS_MACINTOSH_CLASSIC) && !defined(OPENSSL_SYS_SUNOS)

 # include <sys/ioctl.h>

 #endif

 #ifdef OPENSSL_SYS_MSDOS

 # include <conio.h>

 #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(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))

 #include "libcrypto_wsd_macros.h"

 #include "libcrypto_wsd.h"

 #endif

 #ifdef OPENSSL_SYS_SUNOS

 	typedef int sig_atomic_t;

 #endif

 #if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(MAC_OS_GUSI_SOURCE) || defined(OPENSSL_SYS_NETWARE)

 /*

  * 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

 /* Define globals.  They are protected by a lock */

 #ifdef SIGACTION

 static struct sigaction savsig[NX509_SIG];

 #else

 static void (*savsig[NX509_SIG])(int );

 #endif

 #ifdef OPENSSL_SYS_VMS

 static struct IOSB iosb;

 static $DESCRIPTOR(terminal,"TT");

 static long tty_orig[3], tty_new[3]; /* XXX   Is there any guarantee that this will always suffice for the actual structures? */

 static long status;

 static unsigned short channel = 0;

 #else

 #ifndef SYMBIAN

 #if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__)

 static TTY_STRUCT tty_orig,tty_new;

 #endif

 #endif

 #endif

 #ifndef EMULATOR

 static FILE *tty_in, *tty_out;

 static int is_a_tty;

 #else

 GET_STATIC_VAR_FROM_TLS(tty_in,ui_openssl,FILE *)

 #define tty_in (*GET_WSD_VAR_NAME(tty_in,ui_openssl, s)())

 GET_STATIC_VAR_FROM_TLS(tty_out,ui_openssl,FILE *)

 #define tty_out (*GET_WSD_VAR_NAME(tty_out,ui_openssl, s)())

 GET_STATIC_VAR_FROM_TLS(is_a_tty,ui_openssl,int)

 #define is_a_tty (*GET_WSD_VAR_NAME(is_a_tty,ui_openssl, s)())

 #endif

 /* Declare static functions */

 #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)

 static void read_till_nl(FILE *);

 static void recsig(int);

 static void pushsig(void);

 static void popsig(void);

 #endif

 #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16)

 static int noecho_fgets(char *buf, int size, FILE *tty);

 #endif

 static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl);

 static int read_string(UI *ui, UI_STRING *uis);

 static int write_string(UI *ui, UI_STRING *uis);

 static int open_console(UI *ui);

 static int echo_console(UI *ui);

 static int noecho_console(UI *ui);

 static int close_console(UI *ui);

 #ifndef EMULATOR

 static UI_METHOD ui_openssl =

 	{

 	"OpenSSL default user interface",

 	open_console,

 	write_string,

 	NULL,			/* No flusher is needed for command lines */

 	read_string,

 	close_console,

 	NULL

 	};

 #else

 GET_STATIC_VAR_FROM_TLS(ui_openssl,ui_openssl,UI_METHOD)

 #define ui_openssl (*GET_WSD_VAR_NAME(ui_openssl,ui_openssl, s)())

 const UI_METHOD temp_s_ui_openssl =

 	{

 	"OpenSSL default user interface",

 	open_console,

 	write_string,

 	NULL,			/* No flusher is needed for command lines */

 	read_string,

 	close_console,

 	NULL

 	};

 #endif

 /* The method with all the built-in thingies */

 EXPORT_C UI_METHOD *UI_OpenSSL(void)

 	{

 	return &ui_openssl;

 	}

 /* The following function makes sure that info and error strings are printed

    before any prompt. */

 static int write_string(UI *ui, UI_STRING *uis)

 	{

 	switch (UI_get_string_type(uis))

 		{

 	case UIT_ERROR:

 	case UIT_INFO:

 		fputs(UI_get0_output_string(uis), tty_out);

 		fflush(tty_out);

 		break;

 	default:

 		break;

 		}

 	return 1;

 	}

 static int read_string(UI *ui, UI_STRING *uis)

 	{

 	int ok = 0;

 	switch (UI_get_string_type(uis))

 		{

 	case UIT_BOOLEAN:

 		fputs(UI_get0_output_string(uis), tty_out);

 		fputs(UI_get0_action_string(uis), tty_out);

 		fflush(tty_out);

 		return read_string_inner(ui, uis,

 			UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 0);

 	case UIT_PROMPT:

 		fputs(UI_get0_output_string(uis), tty_out);

 		fflush(tty_out);

 		return read_string_inner(ui, uis,

 			UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 1);

 	case UIT_VERIFY:

 		fprintf(tty_out,"Verifying - %s",

 			UI_get0_output_string(uis));

 		fflush(tty_out);

 		if ((ok = read_string_inner(ui, uis,

 			UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 1)) <= 0)

 			return ok;

 		if (strcmp(UI_get0_result_string(uis),

 			UI_get0_test_string(uis)) != 0)

 			{

 			fprintf(tty_out,"Verify failure\n");

 			fflush(tty_out);

 			return 0;

 			}

 		break;

 	default:

 		break;

 		}

 	return 1;

 	}

 #ifndef SYMBIAN

 #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)

 /* Internal functions to read a string without echoing */

 static void read_till_nl(FILE *in)

 	{

 #define SIZE 4

 	char buf[SIZE+1];

 	do	{

 		fgets(buf,SIZE,in);

 		} while (strchr(buf,'\n') == NULL);

 	}

 static volatile sig_atomic_t intr_signal;

 #endif

 #endif

 static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl)

 	{

 	static int ps;

 	int ok;

 	char result[BUFSIZ];

 	int maxsize = BUFSIZ-1;

 #ifndef SYMBIAN	

 #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)

 	char *p;

 	intr_signal=0;

 	ok=0;

 	ps=0;

 	pushsig();

 	ps=1;

 	if (!echo && !noecho_console(ui))

 		goto error;

 	ps=2;

 	result[0]='\0';

 #ifdef OPENSSL_SYS_MSDOS

 	if (!echo)

 		{

 		noecho_fgets(result,maxsize,tty_in);

 		p=result; /* FIXME: noecho_fgets doesn't return errors */

 		}

 	else

 		p=fgets(result,maxsize,tty_in);

 #else

 	p=fgets(result,maxsize,tty_in);

 #endif

 	if(!p)

 		goto error;

 	if (feof(tty_in)) goto error;

 	if (ferror(tty_in)) goto error;

 	if ((p=(char *)strchr(result,'\n')) != NULL)

 		{

 		if (strip_nl)

 			*p='\0';

 		}

 	else

 		read_till_nl(tty_in);

 	if (UI_set_result(ui, uis, result) >= 0)

 		ok=1;

 error:

 	if (intr_signal == SIGINT)

 		ok=-1;

 	if (!echo) fprintf(tty_out,"\n");

 	if (ps >= 2 && !echo && !echo_console(ui))

 		ok=0;

 	if (ps >= 1)

 		popsig();

 #else

 	ok=1;

 #endif

 #endif

 	OPENSSL_cleanse(result,BUFSIZ);

 	return ok;

 	}

 /* Internal functions to open, handle and close a channel to the console.  */

 static int open_console(UI *ui)

 	{

 	CRYPTO_w_lock(CRYPTO_LOCK_UI);

 	is_a_tty = 1;

 #if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_NETWARE)

 	tty_in=stdin;

 	tty_out=stderr;

 #else

 #  ifdef OPENSSL_SYS_MSDOS

 #    define DEV_TTY "con"

 #  else

 #    define DEV_TTY "/dev/tty"

 #  endif

 	if ((tty_in=fopen(DEV_TTY,"r")) == NULL)

 		tty_in=stdin;

 	if ((tty_out=fopen(DEV_TTY,"w")) == NULL)

 		tty_out=stderr;

 #endif

 #if defined(TTY_get) && !defined(OPENSSL_SYS_VMS)

  	if (TTY_get(fileno(tty_in),&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 0;

 		}

 #endif

 #ifdef OPENSSL_SYS_VMS

 	status = sys$assign(&terminal,&channel,0,0);

 	if (status != SS$_NORMAL)

 		return 0;

 	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 0;

 #endif

 	return 1;

 	}

 static int noecho_console(UI *ui)

 	{

 #ifdef TTY_FLAGS

 	memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig));

 	tty_new.TTY_FLAGS &= ~ECHO;

 #endif

 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)

 	if (is_a_tty && (TTY_set(fileno(tty_in),&tty_new) == -1))

 		return 0;

 #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 0;

 #endif

 	return 1;

 	}

 static int echo_console(UI *ui)

 	{

 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)

 	memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig));

 	tty_new.TTY_FLAGS |= ECHO;

 #endif

 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)

 	if (is_a_tty && (TTY_set(fileno(tty_in),&tty_new) == -1))

 		return 0;

 #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 0;

 #endif

 	return 1;

 	}

 static int close_console(UI *ui)

 	{

 	if (tty_in != stdin) fclose(tty_in);

 	if (tty_out != stderr) fclose(tty_out);

 #ifdef OPENSSL_SYS_VMS

 	status = sys$dassgn(channel);

 #endif

 	CRYPTO_w_unlock(CRYPTO_LOCK_UI);

 	return 1;

 	}

 #ifndef SYMBIAN

 #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)

 /* Internal functions to handle signals and act on them */

 static void pushsig(void)

 	{

 #ifndef OPENSSL_SYS_WIN32

 	int i;

 #endif

 #ifdef SIGACTION

 	struct sigaction sa;

 	memset(&sa,0,sizeof sa);

 	sa.sa_handler=recsig;

 #endif

 #ifdef OPENSSL_SYS_WIN32

 	savsig[SIGABRT]=signal(SIGABRT,recsig);

 	savsig[SIGFPE]=signal(SIGFPE,recsig);

 	savsig[SIGILL]=signal(SIGILL,recsig);

 	savsig[SIGINT]=signal(SIGINT,recsig);

 	savsig[SIGSEGV]=signal(SIGSEGV,recsig);

 	savsig[SIGTERM]=signal(SIGTERM,recsig);

 #else

 	for (i=1; i<NX509_SIG; i++)

 		{

 #ifdef SIGUSR1

 		if (i == SIGUSR1)

 			continue;

 #endif

 #ifdef SIGUSR2

 		if (i == SIGUSR2)

 			continue;

 #endif

 #ifdef SIGKILL

 		if (i == SIGKILL) /* We can't make any action on that. */

 			continue;

 #endif

 #ifdef SIGACTION

 		sigaction(i,&sa,&savsig[i]);

 #else

 		savsig[i]=signal(i,recsig);

 #endif

 		}

 #endif

 #ifdef SIGWINCH

 	signal(SIGWINCH,SIG_DFL);

 #endif

 	}

 static void popsig(void)

 	{

 #ifdef OPENSSL_SYS_WIN32

 	signal(SIGABRT,savsig[SIGABRT]);

 	signal(SIGFPE,savsig[SIGFPE]);

 	signal(SIGILL,savsig[SIGILL]);

 	signal(SIGINT,savsig[SIGINT]);

 	signal(SIGSEGV,savsig[SIGSEGV]);

 	signal(SIGTERM,savsig[SIGTERM]);

 #else

 	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

 		}

 #endif

 	}

 static void recsig(int i)

 	{

 	intr_signal=i;

 	}

 #endif

 #endif

 /* Internal functions specific for Windows */

 #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)

 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;

 			}

 		}

 #ifndef SYMBIAN		

 #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

 #endif

 	return(strlen(buf));

 	}

 #endif