text: /* vi: set sw=4 ts=4: */
  /*
   * Ask for a password
   * I use a static buffer in this function.  Plan accordingly.
   *
   * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
   *
   * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
   */
  
  #include <termios.h>
  //#include <sys/ioctl.h>
  
  #include "libbb.h"
  
  /* do nothing signal handler */
  static void askpass_timeout(int ATTRIBUTE_UNUSED ignore)
  {
  }
  
  char *bb_askpass(int timeout, const char * prompt)
  {
  	static char passwd[64];
  
  	char *ret;
  	int i;
  	struct sigaction sa;
  	struct termios old, new;
  
  	tcgetattr(STDIN_FILENO, &old);
  	tcflush(STDIN_FILENO, TCIFLUSH);
  
  	memset(passwd, 0, sizeof(passwd));
  
  	fputs(prompt, stdout);
  	fflush(stdout);
  
  	tcgetattr(STDIN_FILENO, &new);
  	new.c_iflag &= ~(IUCLC|IXON|IXOFF|IXANY);
  	new.c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|TOSTOP);
  	tcsetattr(STDIN_FILENO, TCSANOW, &new);
  
  	if (timeout) {
  		sa.sa_flags = 0;
  		sa.sa_handler = askpass_timeout;
  		sigaction(SIGALRM, &sa, NULL);
  		alarm(timeout);
  	}
  
  	ret = NULL;
  	if (read(STDIN_FILENO, passwd, sizeof(passwd)-1) > 0) {
  		ret = passwd;
  		i = 0;
  		/* Last byte is guaranteed to be 0
  		   (read did not overwrite it) */
  		do {
  			if (passwd[i] == '\r' || passwd[i] == '\n')
  				passwd[i] = '\0';
  		} while (passwd[i++]);
  	}
  
  	if (timeout) {
  		alarm(0);
  	}
  
  	tcsetattr(STDIN_FILENO, TCSANOW, &old);
  	puts("");
  	fflush(stdout);
  	return ret;
  }
  