1/*	$NetBSD: getpass.c,v 1.4 2024/03/04 17:10:33 christos Exp $	*/
2
3/* getpass.c -- get password from user */
4/* $OpenLDAP$ */
5/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
6 *
7 * Copyright 1998-2021 The OpenLDAP Foundation.
8 * Portions Copyright 1998-2003 Kurt D. Zeilenga.
9 * Portions Copyright 2009 Howard Chu.
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted only as authorized by the OpenLDAP
14 * Public License.
15 *
16 * A copy of this license is available in the file LICENSE in the
17 * top-level directory of the distribution or, alternatively, at
18 * <http://www.OpenLDAP.org/license.html>.
19 */
20/* Portions Copyright (c) 1992, 1993  Regents of the University of Michigan.
21 * All rights reserved.
22 *
23 * Redistribution and use in source and binary forms are permitted
24 * provided that this notice is preserved and that due credit is given
25 * to the University of Michigan at Ann Arbor. The name of the University
26 * may not be used to endorse or promote products derived from this
27 * software without specific prior written permission. This software
28 * is provided ``as is'' without express or implied warranty.
29 */
30/* This work was originally developed by the University of Michigan
31 * and distributed as part of U-MICH LDAP.  It was adapted for use in
32 * -llutil by Kurt D. Zeilenga and subsequently rewritten by Howard Chu.
33 */
34
35#include <sys/cdefs.h>
36__RCSID("$NetBSD: getpass.c,v 1.4 2024/03/04 17:10:33 christos Exp $");
37
38#include "portable.h"
39
40#include <stdio.h>
41
42#include <ac/stdlib.h>
43
44#include <ac/ctype.h>
45#include <ac/signal.h>
46#include <ac/string.h>
47#include <ac/termios.h>
48#include <ac/time.h>
49#include <ac/unistd.h>
50
51#ifndef HAVE_GETPASSPHRASE
52
53#ifdef HAVE_FCNTL_H
54#include <fcntl.h>
55#endif
56
57#ifdef HAVE_CONIO_H
58#include <conio.h>
59#endif
60
61#include <lber.h>
62#include <ldap.h>
63
64#include "ldap_defaults.h"
65
66#define PBUF	512
67
68#ifdef HAVE_WINSOCK
69#define TTY "con:"
70#else
71#define TTY "/dev/tty"
72#endif
73
74char *
75lutil_getpass( const char *prompt )
76{
77	static char pbuf[PBUF];
78	FILE *fi;
79	int c;
80	unsigned i;
81#if defined(HAVE_TERMIOS_H) || defined(HAVE_SGTTY_H)
82	TERMIO_TYPE ttyb;
83	TERMFLAG_TYPE flags;
84	RETSIGTYPE (*sig)( int sig );
85#endif
86
87	if( prompt == NULL ) prompt = _("Password: ");
88
89#if defined(HAVE_TERMIOS_H) || defined(HAVE_SGTTY_H)
90	if ((fi = fopen(TTY, "r")) == NULL)
91		fi = stdin;
92	else
93		setbuf(fi, (char *)NULL);
94	if (fi != stdin) {
95		if (GETATTR(fileno(fi), &ttyb) < 0)
96			perror("GETATTR");
97		sig = SIGNAL (SIGINT, SIG_IGN);
98		flags = GETFLAGS( ttyb );
99		SETFLAGS( ttyb, flags & ~ECHO );
100		if (SETATTR(fileno(fi), &ttyb) < 0)
101			perror("SETATTR");
102	}
103#else
104	fi = stdin;
105#endif
106	fprintf(stderr, "%s", prompt);
107	fflush(stderr);
108	i = 0;
109	while ( (c = getc(fi)) != EOF && c != '\n' && c != '\r' )
110		if ( i < (sizeof(pbuf)-1) )
111			pbuf[i++] = c;
112#if defined(HAVE_TERMIOS_H) || defined(HAVE_SGTTY_H)
113	/* tidy up */
114	if (fi != stdin) {
115		fprintf(stderr, "\n");
116		fflush(stderr);
117		SETFLAGS( ttyb, flags );
118		if (SETATTR(fileno(fi), &ttyb) < 0)
119			perror("SETATTR");
120		(void) SIGNAL (SIGINT, sig);
121		(void) fclose(fi);
122	}
123#endif
124	if ( c == EOF )
125		return( NULL );
126	pbuf[i] = '\0';
127	return (pbuf);
128}
129
130#endif /* !NEED_GETPASSPHRASE */
131