| /*- |
| * Copyright (c) 2003-2007 Tim Kientzle |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include "test.h" |
| __FBSDID("$FreeBSD: head/lib/libarchive/test/test_fuzz.c 201247 2009-12-30 05:59:21Z kientzle $"); |
| |
| /* |
| * This was inspired by an ISO fuzz tester written by Michal Zalewski |
| * and posted to the "vulnwatch" mailing list on March 17, 2005: |
| * http://seclists.org/vulnwatch/2005/q1/0088.html |
| * |
| * This test simply reads each archive image into memory, pokes |
| * random values into it and runs it through libarchive. It tries |
| * to damage about 1% of each file and repeats the exercise 100 times |
| * with each file. |
| * |
| * Unlike most other tests, this test does not verify libarchive's |
| * responses other than to ensure that libarchive doesn't crash. |
| * |
| * Due to the deliberately random nature of this test, it may be hard |
| * to reproduce failures. Because this test deliberately attempts to |
| * induce crashes, there's little that can be done in the way of |
| * post-failure diagnostics. |
| */ |
| |
| /* Because this works for any archive, we can just re-use the archives |
| * developed for other tests. */ |
| static struct { |
| int uncompress; /* If 1, decompress the file before fuzzing. */ |
| const char *name; |
| } files[] = { |
| {0, "test_fuzz_1.iso.Z"}, /* Exercise compress decompressor. */ |
| {1, "test_fuzz_1.iso.Z"}, |
| {0, "test_compat_bzip2_1.tbz"}, /* Exercise bzip2 decompressor. */ |
| {1, "test_compat_bzip2_1.tbz"}, |
| {0, "test_compat_gtar_1.tar"}, |
| {0, "test_compat_gzip_1.tgz"}, /* Exercise gzip decompressor. */ |
| {0, "test_compat_gzip_2.tgz"}, /* Exercise gzip decompressor. */ |
| {0, "test_compat_tar_hardlink_1.tar"}, |
| {0, "test_compat_xz_1.txz"}, /* Exercise xz decompressor. */ |
| {0, "test_compat_zip_1.zip"}, |
| {0, "test_read_format_ar.ar"}, |
| {0, "test_read_format_cpio_bin_be.cpio"}, |
| {0, "test_read_format_cpio_svr4_gzip_rpm.rpm"}, /* Test RPM unwrapper */ |
| {0, "test_read_format_gtar_sparse_1_17_posix10_modified.tar"}, |
| {0, "test_read_format_mtree.mtree"}, |
| {0, "test_read_format_tar_empty_filename.tar"}, |
| {0, "test_read_format_zip.zip"}, |
| {1, NULL} |
| }; |
| |
| DEFINE_TEST(test_fuzz) |
| { |
| const void *blk; |
| size_t blk_size; |
| off_t blk_offset; |
| int n; |
| |
| for (n = 0; files[n].name != NULL; ++n) { |
| const size_t buffsize = 30000000; |
| const char *filename = files[n].name; |
| struct archive_entry *ae; |
| struct archive *a; |
| char *rawimage, *image; |
| size_t size; |
| int i; |
| |
| extract_reference_file(filename); |
| if (files[n].uncompress) { |
| int r; |
| /* Use format_raw to decompress the data. */ |
| assert((a = archive_read_new()) != NULL); |
| assertEqualIntA(a, ARCHIVE_OK, |
| archive_read_support_compression_all(a)); |
| assertEqualIntA(a, ARCHIVE_OK, |
| archive_read_support_format_raw(a)); |
| r = archive_read_open_filename(a, filename, 16384); |
| if (r != ARCHIVE_OK) { |
| archive_read_finish(a); |
| skipping("Cannot uncompress %s", filename); |
| continue; |
| } |
| assertEqualIntA(a, ARCHIVE_OK, |
| archive_read_next_header(a, &ae)); |
| rawimage = malloc(buffsize); |
| size = archive_read_data(a, rawimage, buffsize); |
| assertEqualIntA(a, ARCHIVE_EOF, |
| archive_read_next_header(a, &ae)); |
| assertEqualInt(ARCHIVE_OK, |
| archive_read_finish(a)); |
| assert(size > 0); |
| failure("Internal buffer is not big enough for " |
| "uncompressed test file: %s", filename); |
| if (!assert(size < buffsize)) { |
| free(rawimage); |
| continue; |
| } |
| } else { |
| rawimage = slurpfile(&size, filename); |
| if (!assert(rawimage != NULL)) |
| continue; |
| } |
| image = malloc(size); |
| assert(image != NULL); |
| srand((unsigned)time(NULL)); |
| |
| for (i = 0; i < 100; ++i) { |
| FILE *f; |
| int j, numbytes; |
| |
| /* Fuzz < 1% of the bytes in the archive. */ |
| memcpy(image, rawimage, size); |
| numbytes = (int)(rand() % (size / 100)); |
| for (j = 0; j < numbytes; ++j) |
| image[rand() % size] = (char)rand(); |
| |
| /* Save the messed-up image to a file. |
| * If we crash, that file will be useful. */ |
| f = fopen("after.test.failure.send.this.file." |
| "to.libarchive.maintainers.with.system.details", "wb"); |
| fwrite(image, 1, (size_t)size, f); |
| fclose(f); |
| |
| assert((a = archive_read_new()) != NULL); |
| assertEqualIntA(a, ARCHIVE_OK, |
| archive_read_support_compression_all(a)); |
| assertEqualIntA(a, ARCHIVE_OK, |
| archive_read_support_format_all(a)); |
| |
| if (0 == archive_read_open_memory(a, image, size)) { |
| while(0 == archive_read_next_header(a, &ae)) { |
| while (0 == archive_read_data_block(a, |
| &blk, &blk_size, &blk_offset)) |
| continue; |
| } |
| archive_read_close(a); |
| } |
| archive_read_finish(a); |
| } |
| free(image); |
| free(rawimage); |
| } |
| } |
| |
| |