BSD 4_3_Tahoe release

[unix-history] / usr / src / new / xns / morexnslib / auth / getXNSpass.c

/* $Header: getXNSpass.c,v 2.0 85/11/21 07:22:25 jqj Exp $ */
/*
* contains: getXNSpass
* based on the standard library routine getpass(), it is modified
* for XNS passwords, which may be of almost arbitrary length
*/

/* $Log:        getXNSpass.c,v $
* Revision 2.0  85/11/21  07:22:25  jqj
* 4.3BSD standard release
* 
* Revision 1.1  85/03/26  06:29:09  jqj
* Initial revision
* 
* Revision 1.1  85/03/26  06:29:09  jqj
* Initial revision
* 
*/

/* @(#)getpass.c        4.3 (Berkeley) 5/16/84 */
#include <stdio.h>
#include <signal.h>
#include <sgtty.h>
#define PASSLEN 80

char *
getXNSpass(prompt)
char *prompt;
{
       struct sgttyb ttyb;
       int flags;
       register char *p;
       register c;
       FILE *fi;
       static char pbuf[PASSLEN+1];
       int (*signal())();
       int (*sig)();

       if ((fi = fdopen(open("/dev/tty", 2), "r")) == NULL)
               fi = stdin;
       else
               setbuf(fi, (char *)NULL);
       sig = signal(SIGINT, SIG_IGN);
       ioctl(fileno(fi), TIOCGETP, &ttyb);
       flags = ttyb.sg_flags;
       ttyb.sg_flags &= ~ECHO;
       ioctl(fileno(fi), TIOCSETP, &ttyb);
       fprintf(stderr, "%s", prompt); fflush(stderr);
       for (p=pbuf; (c = getc(fi))!='\n' && c!=EOF;) {
               if (p < &pbuf[PASSLEN])
                       *p++ = c;
       }
       *p = '\0';
       fprintf(stderr, "\n"); fflush(stderr);
       ttyb.sg_flags = flags;
       ioctl(fileno(fi), TIOCSETP, &ttyb);
       signal(SIGINT, sig);
       if (fi != stdin)
               fclose(fi);
       return(pbuf);
}