/* crypto/ui/ui_openssl.c */

/*

 * 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.]

 */

#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.

 */

#if defined(OPENSSL_SYSNAME_VXWORKS)

# include <sys/types.h>

#endif

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

# ifndef _POSIX_C_SOURCE

#  define _POSIX_C_SOURCE 2

# endif

#endif

#include <signal.h>

#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)

#  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

#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 someone defines one of the macros TERMIO, TERMIOS or SGTTY, it will

 * remain respected.  Otherwise, we default to TERMIOS except for a few

 * systems that require something different.

 *

 * Note: we do not use SGTTY unless it's defined by the configuration.  We

 * may eventually opt to remove it's use entirely.

 */

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

# if defined(_LIBC)

#  undef  TERMIOS

#  define TERMIO

#  undef  SGTTY

/*

 * We know that VMS, MSDOS, VXWORKS, NETWARE use entirely other mechanisms.

 * MAC_OS_GUSI_SOURCE should probably go away, but that needs to be confirmed.

 */

# elif !defined(OPENSSL_SYS_VMS) \

  && !defined(OPENSSL_SYS_MSDOS) \

  && !defined(OPENSSL_SYS_MACINTOSH_CLASSIC) \

  && !defined(MAC_OS_GUSI_SOURCE) \

  && !defined(OPENSSL_SYS_VXWORKS) \

  && !defined(OPENSSL_SYS_NETWARE)

#  define TERMIOS

#  undef  TERMIO

#  undef  SGTTY

# endif

#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

#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

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

static TTY_STRUCT tty_orig, tty_new;

# endif

#endif

static FILE *tty_in, *tty_out;

static int is_a_tty;

/* Declare static functions */

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

static int 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);

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

};

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

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;

}

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

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

static int read_till_nl(FILE *in)

{

# define SIZE 4

    char buf[SIZE + 1];

    do {

        if (!fgets(buf, SIZE, in))

            return 0;

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

    return 1;

}

static volatile sig_atomic_t intr_signal;

#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;

#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 == NULL)

        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 if (!read_till_nl(tty_in))

        goto error;

    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

    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) || defined(OPENSSL_SYS_BEOS)

    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

# ifdef ENODEV

            /*

             * MacOS X returns ENODEV (Operation not supported by device),

             * which seems appropriate.

             */

        if (errno == ENODEV)

            is_a_tty = 0;

        else

# endif

            return 0;

    }

#endif

#ifdef OPENSSL_SYS_VMS

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

    /* if there isn't a TT device, something is very wrong */

    if (status != SS$_NORMAL)

        return 0;

    status = sys$qiow(0, channel, IO$_SENSEMODE, &iosb, 0, 0, tty_orig, 12,

                      0, 0, 0, 0);

    /* If IO$_SENSEMODE doesn't work, this is not a terminal device */

    if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))

        is_a_tty = 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

    if (is_a_tty) {

        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

    if (is_a_tty) {

        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);

    if (status != SS$_NORMAL)

        return 0;

#endif

    CRYPTO_w_unlock(CRYPTO_LOCK_UI);

    return 1;

}

#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

/* 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();

# elif defined(_WIN32)

        i = _getch();

# 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