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i bet a lot of people didn't know what ssh 1.2.16 had a nice license.
well, except for the patent issues.  someone in sweden (forget their
name at the moment) cleaned out most of the patented code, and now
this code removes rsa code.  when this is done, it will link against
libssl, but the work isn't completely done yet.  then we need to bring
this up to modern days, featurewise.

/*

check-fds.c

Author: Tatu Ylonen <ylo@cs.hut.fi>

Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
                   All rights reserved

Created: Sat Apr  8 00:25:04 1995 ylo

*/

#include <stdio.h>
RCSID("$Id: check-fds.c,v 1.1 1999/09/26 20:53:34 deraadt Exp $");

#include <sys/types.h>
#include <fcntl.h>
#include <sys/stat.h>

int main(int ac, char **av)
{
  int i, dummy;
  struct stat st;

  for (i = 0; i < 1024; i++)
    if (fcntl(i, F_GETFL, &dummy) >= 0)
      {
	printf("Descriptor %d is open.\n", i);
	if (fstat(i, &st) < 0)
	  perror("fstat");
	else
	  {
	    printf("st_mode 0x%x, st_dev 0x%x, st_rdev 0x%x, st_ino 0x%x, st_size 0x%lx\n",
		   st.st_mode, st.st_dev, st.st_rdev, st.st_ino, 
		   (long)st.st_size);
	    if (ttyname(i))
	      printf("ttyname: %.100s\n", ttyname(i));
	  }
      }
  exit(0);
}