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/* Getpass.c */
/* $RCSfile: getpass.c,v $
* $Revision: 14020.11 $
* $Date: 93/05/21 05:44:36 $
*/
#include "sys.h"
#include <signal.h>
#include "util.h"
#include "cmds.h"
#include "getpass.h"
#include "copyright.h"
#ifndef GETPASS
#ifndef sun /* ...both unnecessary, and conflicting with <termios.h> */
#include <sys/ioctl.h>
#endif
#ifdef TERMIOS
# include <termios.h>
#else
# ifdef SGTTYB
# include <sgtty.h>
# else
# include <termio.h>
# endif
#endif /* !TERMIOS */
#ifdef STRICT_PROTOS
int ioctl(int, int, ...);
#endif
#endif /* GETPASS */
void Echo(FILE *fp, int on)
{
#ifndef GETPASS /* Otherwise just do nothing which is ok. */
#ifdef TERMIOS
static struct termios orig, noecho, *tp;
#else
# ifdef SGTTYB
static struct sgttyb orig, noecho, *tp;
# else
static struct termio orig, noecho, *tp;
# endif
#endif
static int state = 0;
int fd = fileno(fp);
if (!isatty(fd))
return;
if (state == 0) {
#ifdef TERMIOS
if (tcgetattr(fd, &orig) < 0)
PERROR("echo", "tcgetattr");
noecho = orig;
noecho.c_lflag &= ~ECHO;
#else
# ifdef SGTTYB
if (ioctl(fd, TIOCGETP, &orig) < 0)
PERROR("echo", "ioctl");
noecho = orig;
noecho.sg_flags &= ~ECHO;
# else
if (ioctl(fd, TCGETA, &orig) < 0)
PERROR("echo", "ioctl");
noecho = orig;
noecho.c_lflag &= ~ECHO;
# endif
#endif
state = 1;
}
tp = NULL;
if (on && state == 2) {
/* Turn echo back on. */
tp = &orig;
state = 1;
} else if (!on && state == 1) {
/* Turn echo off. */
tp = &noecho;
state = 2;
}
if (tp != NULL) {
#ifdef TERMIOS
if (tcsetattr(fd, TCSANOW, tp) < 0)
PERROR("echo", "tcsetattr");
#else
# ifdef SGTTYB
if (ioctl(fd, TIOCSETP, tp) < 0)
PERROR("echo", "ioctl");
# else
if (ioctl(fd, TCSETA, tp) < 0)
PERROR("echo", "ioctl");
# endif
#endif /* !TERMIOS */
}
#endif /* GETPASS */
} /* Echo */
#ifndef GETPASS
char *Getpass(char *promptstr)
{
register int ch;
register char *p;
FILE *fp, *outfp;
Sig_t oldintr;
static char buf[kMaxPassLen + 1];
/*
* read and write to /dev/tty if possible; else read from
* stdin and write to stderr.
*/
#if !defined(BOTCHED_FOPEN_RW)
if ((outfp = fp = fopen("/dev/tty", "w+")) == NULL) {
outfp = stderr;
fp = stdin;
}
#else
/* SCO 32v2 botches "w+" open */
if ((fp = fopen("/dev/tty", "r")) == NULL)
fp = stdin;
if ((outfp = fopen("/dev/tty", "w")) == NULL)
outfp = stderr;
#endif
oldintr = Signal(SIGINT, SIG_IGN);
Echo(fp, 0); /* Turn echoing off. */
(void) fputs(promptstr, outfp);
(void) rewind(outfp); /* implied flush */
for (p = buf; (ch = getc(fp)) != EOF && ch != '\n';)
if (p < buf + kMaxPassLen)
*p++ = ch;
*p = '\0';
(void)write(fileno(outfp), "\n", 1);
Echo(fp, 1);
(void) Signal(SIGINT, oldintr);
if (fp != stdin)
(void)fclose(fp);
#if defined(BOTCHED_FOPEN_RW)
if (outfp != stderr)
(void)fclose(outfp);
#endif
return(buf);
} /* Getpass */
#endif /* GETPASS */
/* eof Getpass.c */
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