From:	"Dan, Ho-Jin" <naturalis AT cais DOT kaist DOT ac DOT kr>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Getch() in UNIX
Date:	Thu, 07 May 1998 09:29:54 +0000
Organization:	KAIST
Lines:	42
Message-ID:	<35517F12.2ECAC739@cais.kaist.ac.kr>
References:	<354EE6B2 DOT 41C6 AT cc DOT hut DOT fi>
NNTP-Posting-Host:	casad4.kaist.ac.kr
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

#include <termio.h>
#include <sys/ioctl.h>

int getch() {
   struct termio o, n;
   char c;

   ioctl(0, TCGETA, &o);
   ioctl(0, TCGETA, &n);

   n.c_lflag &= ~(ICANON | ECHO);
   n.c_cc[VMIN] = 1;
   n.c_cc[VTIME]= 0;

   ioctl(0, TCSETA, &n);
    while(read(0, &c, 1) <= 0);
   ioctl(0, TCSETA, &o);

   return (int)c;
}



Ville Lundberg wrote:

> I'm putting up a server and writing a program to it that asks for an
> password. I first wrote the program at home with DJGPP to DOS, and
> thought it would compile in UNIX. But it didn't, and I found out that it
> was because UNIX hasn't GETCH() as DOS does.
> So could anyone show me how to write that little piece of code that ask
> for the password WITHOUT echoing it to screen? I mean, a password that
> anyone can see by lookin over the shoulder is quite useless, isn't it?
> ;-)   Thanks,
>          --Ville
>
> =-----=
> 51) Pelimiehet ei tee virheitä.
> Ville Lundberg   vlundber AT cc DOT hut DOT fi   www.hut.fi/~vlundber/pelimiehet
> -----=

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