2 * Copyright (c) 2017 Jan Kokemüller
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
40 ATF_TC(realpath_buffer_overflow);
41 ATF_TC_HEAD(realpath_buffer_overflow, tc)
43 atf_tc_set_md_var(tc, "descr",
44 "Test for out of bounds read from 'left' array "
45 "(compile realpath.c with '-fsanitize=address')");
48 ATF_TC_BODY(realpath_buffer_overflow, tc)
50 char path[MAXPATHLEN] = { 0 };
51 char resb[MAXPATHLEN] = { 0 };
56 for (i = 2; i < sizeof(path) - 1; ++i) {
60 ATF_REQUIRE(realpath(path, resb) == NULL);
63 ATF_TC(realpath_empty_symlink);
64 ATF_TC_HEAD(realpath_empty_symlink, tc)
66 atf_tc_set_md_var(tc, "descr",
67 "Test for correct behavior when encountering empty symlinks");
70 ATF_TC_BODY(realpath_empty_symlink, tc)
72 char path[MAXPATHLEN] = { 0 };
73 char slnk[MAXPATHLEN] = { 0 };
74 char resb[MAXPATHLEN] = { 0 };
77 (void)strlcat(slnk, "empty_symlink", sizeof(slnk));
79 ATF_REQUIRE(symlink("", slnk) == 0);
81 fd = open("aaa", O_RDONLY | O_CREAT, 0600);
84 ATF_REQUIRE(close(fd) == 0);
86 (void)strlcat(path, "empty_symlink", sizeof(path));
87 (void)strlcat(path, "/aaa", sizeof(path));
89 ATF_REQUIRE_ERRNO(ENOENT, realpath(path, resb) == NULL);
91 ATF_REQUIRE(unlink("aaa") == 0);
92 ATF_REQUIRE(unlink(slnk) == 0);
98 ATF_TP_ADD_TC(tp, realpath_buffer_overflow);
99 ATF_TP_ADD_TC(tp, realpath_empty_symlink);
101 return atf_no_error();