text: /***********************************************************************
  *                                                                      *
  *               This software is part of the ast package               *
  *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
  *                      and is licensed under the                       *
  *                  Common Public License, Version 1.0                  *
  *                    by AT&T Intellectual Property                     *
  *                                                                      *
  *                A copy of the License is available at                 *
  *            http://www.opensource.org/licenses/cpl1.0.txt             *
  *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
  *                                                                      *
  *              Information and Software Systems Research               *
  *                            AT&T Research                             *
  *                           Florham Park NJ                            *
  *                                                                      *
  *                 Glenn Fowler <gsf@research.att.com>                  *
  *                  David Korn <dgk@research.att.com>                   *
  *                   Phong Vo <kpv@research.att.com>                    *
  *                                                                      *
  ***********************************************************************/
  #include "FEATURE/uwin"
  
  #if !_UWIN || _lib_getpass
  
  void _STUB_getpass(){}
  
  #else
  
  #pragma prototyped
  
  #define getpass	______getpass
  
  #include	<ast.h>
  #include	<termios.h>
  #include	<signal.h>
  
  #undef	getpass
  
  #if defined(__EXPORT__)
  #define extern		__EXPORT__
  #endif
  
  static int interrupt;
  static void handler(int sig)
  {
  	interrupt++;
  }
  
  extern char*	getpass(const char *prompt)
  {
  	struct termios told,tnew;
  	Sfio_t *iop;
  	static char *cp, passwd[32];
  	void (*savesig)(int);
  	if(!(iop = sfopen((Sfio_t*)0, "/dev/tty", "r")))
  		return(0);
  	if(tcgetattr(sffileno(iop),&told) < 0)
  		return(0);
  	interrupt = 0;
  	tnew = told;
  	tnew.c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL);
  	if(tcsetattr(sffileno(iop),TCSANOW,&tnew) < 0)
  		return(0);
  	savesig = signal(SIGINT, handler);
  	sfputr(sfstderr,prompt,-1);
  	if(cp = sfgetr(iop,'\n',1))
  		strncpy(passwd,cp,sizeof(passwd)-1);
  	tcsetattr(sffileno(iop),TCSANOW,&told);
  	sfputc(sfstderr,'\n');
  	sfclose(iop);
  	signal(SIGINT, savesig);
  	if(interrupt)
  		kill(getpid(),SIGINT);
  	return(cp?passwd:0);
  }
  
  
  #endif
  