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/*
Copyright (C) 1997-2025 Free Software Foundation, Inc.
This file is part of GNU Inetutils.
GNU Inetutils is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.
GNU Inetutils is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see `http://www.gnu.org/licenses/'. */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS 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.
*/
/*
* Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute
* of Technology.
*
* For copying and distribution information, please see the file
* <mit-copyright.h>.
*
* This routine prints the supplied string to standard
* output as a prompt, and reads a password string without
* echoing.
*/
#include <config.h>
#if defined RSA_ENCPWD || defined KRB4_ENCPWD
# include <stdio.h>
# include <sys/ioctl.h>
# include <setjmp.h>
static jmp_buf env;
/*** Routines ****************************************************** */
/*
* This version just returns the string, doesn't map to key.
*
* Returns 0 on success, non-zero on failure.
*/
int
local_des_read_pw_string (s, max, prompt, verify)
char *s;
int max;
char *prompt;
int verify;
{
int ok = 0;
char *ptr;
jmp_buf old_env;
struct sgttyb tty_state;
char key_string[BUFSIZ];
if (max > BUFSIZ)
{
return -1;
}
/* XXX assume jmp_buf is typedef'ed to an array */
memmove ((char *) env, (char *) old_env, sizeof (env));
if (setjmp (env))
goto lose;
/* save terminal state */
if (ioctl (0, TIOCGETP, (char *) &tty_state) == -1)
return -1;
/*
push_signals();
*/
/* Turn off echo */
tty_state.sg_flags &= ~ECHO;
if (ioctl (0, TIOCSETP, (char *) &tty_state) == -1)
return -1;
while (!ok)
{
printf ("%s", prompt);
fflush (stdout);
while (!fgets (s, max, stdin));
if ((ptr = strchr (s, '\n')))
*ptr = '\0';
if (verify)
{
printf ("\nVerifying, please re-enter %s", prompt);
fflush (stdout);
if (!fgets (key_string, sizeof (key_string), stdin))
{
clearerr (stdin);
continue;
}
if ((ptr = strchr (key_string, '\n')))
*ptr = '\0';
if (strcmp (s, key_string))
{
printf ("\n\07\07Mismatch - try again\n");
fflush (stdout);
continue;
}
}
ok = 1;
}
lose:
if (!ok)
memset (s, 0, max);
printf ("\n");
/* turn echo back on */
tty_state.sg_flags |= ECHO;
if (ioctl (0, TIOCSETP, (char *) &tty_state))
ok = 0;
/*
pop_signals();
*/
memmove ((char *) old_env, (char *) env, sizeof (env));
if (verify)
memset (key_string, 0, sizeof (key_string));
s[max - 1] = 0; /* force termination */
return !ok; /* return nonzero if not okay */
}
#endif /* defined(RSA_ENCPWD) || defined(KRB4_ENCPWD) */
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