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/* getpass */
/*
* Copyright (c) 1988 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)getpass.c based on 5.3 (Berkeley) 9/22/88";
#endif /* LIBC_SCCS and not lint */
#if defined(__NetBSD__)
#define USE_OLD_TTY
#endif
/* >>> Craig Metz */
#if defined(LINUX)
#define SVR3
#endif
/* <<< Craig Metz */
#if defined(SOLARIS) || defined(hpux)
#include <signal.h>
#include <sgtty.h>
#include <sys/ioctl.h>
#else
#ifdef SVR3
#include <termio.h>
#else
#include <sys/ioctl.h>
#endif
#include <sys/signal.h>
#endif
#include <stdio.h>
char *
getpass(prompt)
char *prompt;
{
#ifdef SVR3
struct termio term_struct;
tcflag_t svflagval;
#else
struct sgttyb ttyb;
int svflagval;
#endif
register int ch;
register char *p;
FILE *fp, *outfp;
#ifdef SOLARIS
sigset_t maskset;
#else
long omask;
#endif
#define PASSWD_LEN 128
static char buf[PASSWD_LEN + 1];
/*
* read and write to /dev/tty if possible; else read from
* stdin and write to stderr.
*/
if ((outfp = fp = fopen("/dev/tty", "w+")) == NULL) {
outfp = stderr;
fp = stdin;
}
#ifdef SVR3
(void)ioctl(fileno(fp), TCGETA, &term_struct);
svflagval = term_struct.c_lflag;
term_struct.c_lflag &= ~ECHO;
#else
(void)ioctl(fileno(fp), TIOCGETP, &ttyb);
svflagval = ttyb.sg_flags;
ttyb.sg_flags &= ~ECHO;
#endif
#ifdef SOLARIS
if (sigprocmask(0, (sigset_t *)0, &maskset) || sighold(SIGINT)) {
perror("Can't block SIGINT in getpass() ");
exit(1);
}
#else
omask = sigblock(sigmask(SIGINT));
#endif
#ifdef SVR3
(void)ioctl(fileno(fp), TCSETA, &term_struct);
#else
(void)ioctl(fileno(fp), TIOCSETP, &ttyb);
#endif
fputs(prompt, outfp);
rewind(outfp); /* implied flush */
for (p = buf; (ch = getc(fp)) != EOF && ch != '\n';)
if (p < buf + PASSWD_LEN)
*p++ = ch;
*p = '\0';
(void)write(fileno(outfp), "\n", 1);
#ifdef SVR3
term_struct.c_lflag = svflagval;
(void)ioctl(fileno(fp), TCSETA, &term_struct);
#else
ttyb.sg_flags = svflagval;
(void)ioctl(fileno(fp), TIOCSETP, &ttyb);
#endif
#ifdef SOLARIS
if (sigprocmask(SIG_SETMASK, &maskset, (sigset_t *)0)) {
perror("Can't restore signal mask in getpass() ");
exit(1);
}
#else
(void)sigsetmask(omask);
#endif
if (fp != stdin)
(void)fclose(fp);
return(buf);
}
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