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getpass.c
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C/C++ Source or Header
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1996-09-28
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3KB
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94 lines
/*
* Copyright (c) 1988 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 REGENTS 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 THE REGENTS OR CONTRIBUTORS 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.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)getpass.c 5.9 (Berkeley) 5/6/91";
#endif /* LIBC_SCCS and not lint */
#define _KERNEL
#include "ixnet.h"
#include <sys/termios.h>
#include <signal.h>
#include <sys/signal.h>
#include <stdio.h>
#include <unistd.h>
#include <pwd.h>
#include <termios.h>
#include "ixprotos.h"
int tcgetattr __P((int, struct termios *));
int tcsetattr __P((int, int, const struct termios *));
char *
getpass(const char *prompt)
{
struct termios term;
register int ch;
register char *s;
FILE *fp, *outfp;
long omask;
int echo;
static char buf[_PASSWORD_LEN + 1];
register struct ixnet *p = (struct ixnet *)u.u_ixnet;
if (p->u_networkprotocol == IX_NETWORK_AMITCP) {
return UG_getpass(prompt);
}
outfp = fp = stderr;
/*
* note - blocking signals isn't necessarily the
* right thing, but we leave it for now.
*/
omask = sigblock(sigmask(SIGINT)|sigmask(SIGTSTP));
(void)tcgetattr(fileno(fp), &term);
if ((echo = term.c_lflag) & ECHO) {
term.c_lflag &= ~(ECHO|ICANON);
(void)tcsetattr(fileno(fp), TCSAFLUSH|TCSASOFT, &term);
}
(void)fputs(prompt, outfp);
rewind(outfp); /* implied flush */
for (s = buf; (ch = getc(fp)) != EOF && ch != '\n' && ch != '\r';)
if (s < buf + _PASSWORD_LEN)
*s++ = ch;
*s = '\0';
write(fileno(outfp), "\n", 1);
if (echo & ECHO) {
term.c_lflag = echo;
tcsetattr(fileno(fp), TCSAFLUSH|TCSASOFT, &term);
}
sigsetmask(omask);
return buf;
}