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