1 /* $NetBSD: getpass.c,v 1.15 2003/08/07 16:42:50 agc Exp $ */
3 * Copyright (c) 1988, 1993
4 * The Regents of the University of California. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the University nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #include <sys/cdefs.h>
32 #if defined(LIBC_SCCS) && !defined(lint)
34 static char sccsid
[] = "@(#)getpass.c 8.1 (Berkeley) 6/4/93";
36 __RCSID("$NetBSD: getpass.c,v 1.15 2003/08/07 16:42:50 agc Exp $");
38 #endif /* LIBC_SCCS and not lint */
39 #include "namespace.h"
50 __weak_alias(getpass
,_getpass
)
62 static char buf
[_PASSWORD_LEN
+ 1];
65 _DIAGASSERT(prompt
!= NULL
);
68 * read and write to /dev/tty if possible; else read from
69 * stdin and write to stderr.
71 if ((outfp
= fp
= fopen(_PATH_TTY
, "w+")) == NULL
) {
76 * note - blocking signals isn't necessarily the
77 * right thing, but we leave it for now.
80 sigaddset(&nset
, SIGINT
);
81 sigaddset(&nset
, SIGTSTP
);
82 (void)sigprocmask(SIG_BLOCK
, &nset
, &oset
);
83 (void)tcgetattr(fileno(fp
), &term
);
84 if ((echo
= (term
.c_lflag
& ECHO
)) != 0) {
85 term
.c_lflag
&= ~ECHO
;
86 (void)tcsetattr(fileno(fp
), TCSAFLUSH
/*|TCSASOFT*/, &term
);
89 (void)fputs(prompt
, outfp
);
90 rewind(outfp
); /* implied flush */
91 for (p
= buf
; (ch
= getc(fp
)) != EOF
&& ch
!= '\n';)
92 if (p
< buf
+ _PASSWORD_LEN
)
95 (void)write(fileno(outfp
), "\n", 1);
98 (void)tcsetattr(fileno(fp
), TCSAFLUSH
/*|TCSASOFT*/, &term
);
100 (void)sigprocmask(SIG_SETMASK
, &oset
, NULL
);