125 lines
4.1 KiB
C
125 lines
4.1 KiB
C
/*-
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* Copyright (c) 2003-2007 Tim Kientzle
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "test.h"
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__FBSDID("$FreeBSD$");
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/*
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* This was inspired by an ISO fuzz tester written by Michal Zalewski
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* and posted to the "vulnwatch" mailing list on March 17, 2005:
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* http://seclists.org/vulnwatch/2005/q1/0088.html
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*
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* This test simply reads each archive image into memory, pokes
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* random values into it and runs it through libarchive. It tries
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* to damage about 1% of each file and repeats the exercise 100 times
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* with each file.
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*
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* Unlike most other tests, this test does not verify libarchive's
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* responses other than to ensure that libarchive doesn't crash.
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*
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* Due to the deliberately random nature of this test, it may be hard
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* to reproduce failures. Because this test deliberately attempts to
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* induce crashes, there's little that can be done in the way of
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* post-failure diagnostics.
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*/
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/* Because this works for any archive, I can just re-use the archives
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* developed for other tests. I've not included all of the compressed
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* archives here, though; I don't want to spend all of my test time
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* testing zlib and bzlib. */
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static const char *
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files[] = {
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"test_fuzz_1.iso",
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#if HAVE_BZLIB_H
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"test_compat_bzip2_1.tbz",
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#endif
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"test_compat_gtar_1.tar",
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"test_compat_tar_hardlink_1.tar",
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#if HAVE_ZLIB_H
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"test_compat_zip_1.zip",
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#endif
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"test_read_format_gtar_sparse_1_17_posix10_modified.tar",
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"test_read_format_tar_empty_filename.tar",
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#if HAVE_ZLIB_H
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"test_read_format_zip.zip",
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#endif
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NULL
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};
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DEFINE_TEST(test_fuzz)
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{
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const char **filep;
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for (filep = files; *filep != NULL; ++filep) {
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char *rawimage, *image;
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size_t size;
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int i;
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extract_reference_file(*filep);
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rawimage = slurpfile(&size, *filep);
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assert(rawimage != NULL);
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image = malloc(size);
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assert(image != NULL);
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srand(time(NULL));
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for (i = 0; i < 100; ++i) {
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struct archive_entry *ae;
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struct archive *a;
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int j, fd, numbytes;
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/* Fuzz < 1% of the bytes in the archive. */
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memcpy(image, rawimage, size);
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numbytes = (int)(rand() % (size / 100));
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for (j = 0; j < numbytes; ++j)
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image[rand() % size] = (char)rand();
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/* Save the messed-up image to a file.
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* If we crash, that file will be useful. */
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fd = open("after.test.failure.send.this.file."
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"to.libarchive.maintainers.with.system.details",
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O_WRONLY | O_CREAT | O_TRUNC, 0744);
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write(fd, image, (off_t)size);
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close(fd);
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assert((a = archive_read_new()) != NULL);
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assertEqualIntA(a, ARCHIVE_OK,
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archive_read_support_compression_all(a));
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assertEqualIntA(a, ARCHIVE_OK,
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archive_read_support_format_all(a));
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if (0 == archive_read_open_memory(a, image, size)) {
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while(0 == archive_read_next_header(a, &ae)) {
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archive_read_data_skip(a);
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}
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archive_read_close(a);
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archive_read_finish(a);
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}
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}
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free(image);
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free(rawimage);
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}
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}
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