/*
 * Copyright (C) 2006-2007 Free Software Foundation
 * Written by Simon Josefsson
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <config.h>

#include "read-file.h"

#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>

#define FILE1 "/etc/resolv.conf"
#define FILE2 "/dev/null"

int
main (void)
{
  struct stat statbuf;
  int err = 0;

  /* We can perform the test only if the file exists and is readable.
     Test whether it exists, then assume it is world-readable.  */
  if (stat (FILE1, &statbuf) >= 0)
    {
      size_t len;
      char *out = read_file (FILE1, &len);

      if (!out)
        {
	  perror ("Could not read file");
	  err = 1;
	}
      else
	{
	  if (out[len] != '\0')
	    {
	      perror ("BAD: out[len] not zero");
	      err = 1;
	    }

	  /* Assume FILE1 is a regular file or a symlink to a regular file.  */
	  if (len != statbuf.st_size)
	    {
	      fprintf (stderr, "Read %ld from %s...\n", (unsigned long) len, FILE1);
	      err = 1;
	    }
	  free (out);
	}
    }

  /* We can perform the test only if the file exists and is readable.
     Test whether it exists, then assume it is world-readable.  */
  if (stat (FILE2, &statbuf) >= 0)
    {
      size_t len;
      char *out = read_file (FILE2, &len);

      if (!out)
        {
	  perror ("Could not read file");
	  err = 1;
	}
      else
	{
	  if (out[len] != '\0')
	    {
	      perror ("BAD: out[len] not zero");
	      err = 1;
	    }

	  /* /dev/null should always be empty.  Ignore statbuf.st_size, since it
	     is not a regular file.  */
	  if (len != 0)
	    {
	      fprintf (stderr, "Read %ld from %s...\n", (unsigned long) len, FILE2);
	      err = 1;
	    }
	  free (out);
	}
    }

  return err;
}
