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/*
* Bindle Binaries Tools
* Copyright (C) 2022 David M. Syzdek <david@syzdek.net>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of David M. Syzdek 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 COPYRIGHT HOLDERS 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 DAVID M. SYZDEK 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.
*/
#define _LIB_LIBBINDLE_LPROMPT_C 1
#include "lprompt.h"
///////////////
// //
// Headers //
// //
///////////////
// MARK: - Headers
#include <stdio.h>
#include <signal.h>
#include <assert.h>
#ifdef HAVE_TERMIOS_H
#include <termios.h>
#endif
#ifdef HAVE_SGTTY_H
#include <sgtty.h>
#endif
/////////////////
// //
// Functions //
// //
/////////////////
// MARK: - Functions
char *
bindle_getpass(
const char * prompt )
{
static char buff[BNDL_PASSWORD_LEN+1];
return(bindle_getpass_r(prompt, buff, sizeof(buff)));
}
char *
bindle_getpass_r(
const char * prompt,
char * pass,
size_t passlen )
{
FILE * fs;
int c;
size_t pos;
#if defined(HAVE_TERMIOS_H) || defined(HAVE_SGTTY_H)
struct termios old;
struct termios new;
void (*sig)( int sig );
#endif
// prompts for password
prompt = ((prompt)) ? prompt : "Password: ";
if (prompt)
fprintf(stderr, "%s", prompt);
fflush(stdout);
// disables ECHO
#if defined(HAVE_TERMIOS_H) || defined(HAVE_SGTTY_H)
if ((fs = fopen("/dev/tty", "r")) == NULL)
fs = stdin;
if(tcgetattr(fileno(fs), &old) == -1)
return(NULL);
sig = signal(SIGINT, SIG_IGN);
new = old;
new.c_lflag &= ~((unsigned)ECHO);
if(tcsetattr(fileno(fs), TCSANOW, &new))
return(NULL);
#else
fs = stdin;
#endif
// reads buffer
pos = 0;
while ( ((c = getc(fs)) != EOF) && (c != '\n') && (c != '\r') )
if (pos < (passlen-1))
pass[pos++] = (char)c;
pass[pos] = '\0';
// restores previous terminal
fprintf(stderr, "\n");
#if defined(HAVE_TERMIOS_H) || defined(HAVE_SGTTY_H)
fflush(stderr);
if(tcsetattr(fileno(fs), TCSANOW, &old))
return(NULL);
signal(SIGINT, sig);
if (fs != stdin)
fclose(fs);
#endif
return(pass);
}
/* end of source */
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