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
74 char *
lutil_getpass(const char * prompt)75 lutil_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