www.pudn.com > speakFreely-code.zip > GETPASS.C

#include  
#include  
#include  
 
#define	TTY	"/dev/tty"	/* Change to "con" for MS-DOS */ 
 
#define	SIG	void            /* Change to run on sun */ 
 
/* Issue prompt and read reply with echo turned off */ 
char * 
getpass(prompt) 
char *prompt; 
{ 
	struct sgttyb ttyb,ttysav; 
	register char *cp; 
	int c; 
	FILE *tty; 
	static char pbuf[128]; 
	SIG (*signal())(), (*sig)();    /* change for sun */ 
/*	int (*signal())(), (*sig)(); */ /* orginal */ 
 
	if ((tty = fdopen(open(TTY, 2), "r")) == NULL) 
		tty = stdin; 
	else 
		setbuf(tty, (char *)NULL); 
	sig = signal(SIGINT, SIG_IGN); 
	ioctl(fileno(tty), TIOCGETP, &ttyb); 
	ioctl(fileno(tty), TIOCGETP, &ttysav); 
	ttyb.sg_flags |= RAW; 
	ttyb.sg_flags &= ~ECHO; 
	ioctl(fileno(tty), TIOCSETP, &ttyb); 
	fprintf(stderr, "%s", prompt); 
	fflush(stderr); 
	cp = pbuf; 
	for (;;) { 
		c = getc(tty); 
		if(c == '\r' || c == '\n' || c == EOF) 
			break; 
		if (cp < &pbuf[127]) 
			*cp++ = c; 
	} 
	*cp = '\0'; 
	fprintf(stderr,"\r\n"); 
	fflush(stderr); 
	ioctl(fileno(tty), TIOCSETP, &ttysav); 
	signal(SIGINT, sig); 
	if (tty != stdin) 
		fclose(tty); 
	return(pbuf); 
}