tests/realpath_edge.c

   1 /*
   2  * Copyright (c) 2017 Jan Kokemüller
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #include <sys/cdefs.h>
  28
  29 #include <sys/param.h>
  30 #include <errno.h>
  31 #include <fcntl.h>
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35 #include <unistd.h>
  36
  37 #include <darwintest.h>
  38
  39 // Required for ASan
  40 #include "../fbsdcompat/_fbsd_compat_.h"
  41 #include "../stdlib/FreeBSD/realpath.c"
  42 #include "../gen/FreeBSD/getcwd.c"
  43
  44
  45 T_DECL(realpath_buffer_overflow, "Test for out of bounds read from 'left' array (compile realpath.c with '-fsanitize=address')")
  46 {
  47         char path[MAXPATHLEN] = { 0 };
  48         char resb[MAXPATHLEN] = { 0 };
  49         size_t i;
  50
  51         path[0] = 'a';
  52         path[1] = '/';
  53         for (i = 2; i < sizeof(path) - 1; ++i) {
  54                 path[i] = 'a';
  55         }
  56
  57         T_ASSERT_NULL(realpath(path, resb), NULL);
  58 }
  59