1 /* getpass.c -- get password from user */
2 /* $OpenLDAP$ */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 *
5 * Copyright 1998-2021 The OpenLDAP Foundation.
6 * Portions Copyright 1998-2003 Kurt D. Zeilenga.
7 * Portions Copyright 2009 Howard Chu.
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted only as authorized by the OpenLDAP
12 * Public License.
13 *
14 * A copy of this license is available in the file LICENSE in the
15 * top-level directory of the distribution or, alternatively, at
16 * <http://www.OpenLDAP.org/license.html>.
17 */
18 /* Portions Copyright (c) 1992, 1993 Regents of the University of Michigan.
19 * All rights reserved.
20 *
21 * Redistribution and use in source and binary forms are permitted
22 * provided that this notice is preserved and that due credit is given
23 * to the University of Michigan at Ann Arbor. The name of the University
24 * may not be used to endorse or promote products derived from this
25 * software without specific prior written permission. This software
26 * is provided ``as is'' without express or implied warranty.
27 */
28 /* This work was originally developed by the University of Michigan
29 * and distributed as part of U-MICH LDAP. It was adapted for use in
30 * -llutil by Kurt D. Zeilenga and subsequently rewritten by Howard Chu.
31 */
32
33 #include "portable.h"
34
35 #include <stdio.h>
36
37 #include <ac/stdlib.h>
38
39 #include <ac/ctype.h>
40 #include <ac/signal.h>
41 #include <ac/string.h>
42 #include <ac/termios.h>
43 #include <ac/time.h>
44 #include <ac/unistd.h>
45
46 #ifndef HAVE_GETPASSPHRASE
47
48 #ifdef HAVE_FCNTL_H
49 #include <fcntl.h>
50 #endif
51
52 #ifdef HAVE_CONIO_H
53 #include <conio.h>
54 #endif
55
56 #include <lber.h>
57 #include <ldap.h>
58
59 #include "ldap_defaults.h"
60
61 #define PBUF 512
62
63 #ifdef HAVE_WINSOCK
64 #define TTY "con:"
65 #else
66 #define TTY "/dev/tty"
67 #endif
68
69 char *
lutil_getpass(const char * prompt)70 lutil_getpass( const char *prompt )
71 {
72 static char pbuf[PBUF];
73 FILE *fi;
74 int c;
75 unsigned i;
76 #if defined(HAVE_TERMIOS_H) || defined(HAVE_SGTTY_H)
77 TERMIO_TYPE ttyb;
78 TERMFLAG_TYPE flags;
79 RETSIGTYPE (*sig)( int sig );
80 #endif
81
82 if( prompt == NULL ) prompt = _("Password: ");
83
84 #ifdef DEBUG
85 if (debug & D_TRACE)
86 printf("->getpass(%s)\n", prompt);
87 #endif
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